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HOW TO ACCESS LINUX PARTITIONS FROM WINDOWS 10 Access Linux Partitions From Windows 10 Using Linux reader. Go to the Linux reader website, download the free version and install it on your Windows system. Launch Linux reader from the start menu: The default interface of Linux reader looks like below. As you can see in the screenshot, Linux reader shows all Linux and Windows partitions. ENABLE PARALLEL DOWNLOADING IN PACMAN IN ARCH LINUX Ask any Arch users why they prefer Arch Linux over other distributions, they will probably point any one or all of the above aforementioned reasons. The pacman package manager is one of the major distinguishing features of Arch Linux. It is fast, easy-to HOW TO LIST STARTUP SERVICES AT BOOT IN LINUX You can also view the status of a specific service at different run level like below: $ sudo chkconfig --list httpd. If you Linux system uses upstart, run this command to list all startup services: $ sudo initctl list. The above command will show all Session jobs. If you want to show all System jobs, run: $ sudo initctl --system list. APK PACKAGE MANAGER ARCHIVES OSTechNix (Open Source, Technology, Nix*) regularly publishes the latest news, how-to articles, tutorials and tips & tricks about free and opensource software and technology. HOW TO SET PASSWORD POLICIES IN LINUX Set at least one lower-case letters in the password as shown below.. password requisite pam_pwquality.so retry=3 dcredit=-1. Set at least other letters in the password as shown below. password requisite pam_pwquality.so retry=3 ocredit=-1. As you see in the above examples, we have set at least (minimum) one upper-case, lower-case, and a special character in the password. YOUTUBE-DL TUTORIAL WITH EXAMPLES FOR BEGINNERS As you can see in the above screenshot, Youtube-dl lists all available formats of the given video. From left to right, it displays the video format code, extension and ENDEAVOUROS ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux.
OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up APK PACKAGE MANAGER ARCHIVES OSTechNix (Open Source, Technology, Nix*) regularly publishes the latest news, how-to articles, tutorials and tips & tricks about free and opensource software and technology. ENABLE PARALLEL DOWNLOADING IN PACMAN IN ARCH LINUX Ask any Arch users why they prefer Arch Linux over other distributions, they will probably point any one or all of the above aforementioned reasons. The pacman package manager is one of the major distinguishing features of Arch Linux. It is fast, easy-to ARCH USER REPOSITORY (AUR) ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux
HOW TO INSTALL PARU AUR HELPER IN ARCH LINUX There are many AUR helper programs exists. One of the popular AUR helper program is Yay.Today we will discuss about yet another AUR helper named Paru, which is based on Yay.. Paru is a new feature packed AUR helper and pacman wrapper program written in Rust programming language. It is developed by the co-developer of Yay AUR helper.. As you already know, Yay is written in GO. SCREEN COMMAND EXAMPLES TO MANAGE MULTIPLE TERMINAL SESSIONS The number will start from 0. You can move to the next session by pressing Ctrl+n and move to previous by pressing Ctrl+p. Here is the list of important Keyboard shortcuts to manage nested sessions. Ctrl+a ” - List all sessions. Ctrl+a 0 - Switch to session number 0. Ctrl+an -
ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO FIND WHO REBOOTED THE LINUX SYSTEM AND WHEN find who rebooted the Linux system. Also, you can find out which user has rebooted your Linux box by looking at the BASH history file like. $ grep reboot /home/*/.bash_history. The above command will look at all users .bash_history files and display who has rebooted yoursystem.
HOW TO CREATE SSH ALIAS IN LINUX Add all of your remote hosts details like below: Host webserver HostName 192.168.225.22 User sk Host dns HostName server.example.com User root Host dhcp HostName 192.168.225.25 User ostechnix Port 2233. Create SSH Alias In Linux Using SSH Config File. Replace the values of Host, Hostname, User and Port with your own. ORACLE VIRTUALBOX ARCHIVES Oracle VirtualBox is an Open source cross platform virtualization software. It works on all CRON JOB EXAMPLES ARCHIVES This guide explains what is a cron job, and the basic usage of cron jobs in Linux with example commands. It also outlines a few web-based crontab syntax generators and crontab graphical front-ends which are used to easily create and manage cron jobs in Linux. OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up SHARE AND CONTROL TERMINALS IN REAL TIME FROM WEB BROWSER This guide explains what is TermPair, how it works and how to share and control terminals in real time from web browser with end-to-end encryption using TermPair in Linux. TermPair is a web service that allows anyone to view and control their Terminal sessions in real timefrom a
HOW TO INSTALL PARU AUR HELPER IN ARCH LINUX There are many AUR helper programs exists. One of the popular AUR helper program is Yay.Today we will discuss about yet another AUR helper named Paru, which is based on Yay.. Paru is a new feature packed AUR helper and pacman wrapper program written in Rust programming language. It is developed by the co-developer of Yay AUR helper.. As you already know, Yay is written in GO. ARCH USER REPOSITORY (AUR) ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux
ENABLE PARALLEL DOWNLOADING IN PACMAN IN ARCH LINUX Ask any Arch users why they prefer Arch Linux over other distributions, they will probably point any one or all of the above aforementioned reasons. The pacman package manager is one of the major distinguishing features of Arch Linux. It is fast, easy-to SCREEN COMMAND EXAMPLES TO MANAGE MULTIPLE TERMINAL SESSIONS The number will start from 0. You can move to the next session by pressing Ctrl+n and move to previous by pressing Ctrl+p. Here is the list of important Keyboard shortcuts to manage nested sessions. Ctrl+a ” - List all sessions. Ctrl+a 0 - Switch to session number 0. Ctrl+an -
ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO FIND WHO REBOOTED THE LINUX SYSTEM AND WHEN find who rebooted the Linux system. Also, you can find out which user has rebooted your Linux box by looking at the BASH history file like. $ grep reboot /home/*/.bash_history. The above command will look at all users .bash_history files and display who has rebooted yoursystem.
MANJARO ARCHIVES
Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux.
HOW TO CREATE SSH ALIAS IN LINUX Add all of your remote hosts details like below: Host webserver HostName 192.168.225.22 User sk Host dns HostName server.example.com User root Host dhcp HostName 192.168.225.25 User ostechnix Port 2233. Create SSH Alias In Linux Using SSH Config File. Replace the values of Host, Hostname, User and Port with your own. CRON JOB EXAMPLES ARCHIVES This guide explains what is a cron job, and the basic usage of cron jobs in Linux with example commands. It also outlines a few web-based crontab syntax generators and crontab graphical front-ends which are used to easily create and manage cron jobs in Linux. OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up SHARE AND CONTROL TERMINALS IN REAL TIME FROM WEB BROWSER This guide explains what is TermPair, how it works and how to share and control terminals in real time from web browser with end-to-end encryption using TermPair in Linux. TermPair is a web service that allows anyone to view and control their Terminal sessions in real timefrom a
HOW TO INSTALL PARU AUR HELPER IN ARCH LINUX There are many AUR helper programs exists. One of the popular AUR helper program is Yay.Today we will discuss about yet another AUR helper named Paru, which is based on Yay.. Paru is a new feature packed AUR helper and pacman wrapper program written in Rust programming language. It is developed by the co-developer of Yay AUR helper.. As you already know, Yay is written in GO. ARCH USER REPOSITORY (AUR) ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux
ENABLE PARALLEL DOWNLOADING IN PACMAN IN ARCH LINUX Ask any Arch users why they prefer Arch Linux over other distributions, they will probably point any one or all of the above aforementioned reasons. The pacman package manager is one of the major distinguishing features of Arch Linux. It is fast, easy-to SCREEN COMMAND EXAMPLES TO MANAGE MULTIPLE TERMINAL SESSIONS The number will start from 0. You can move to the next session by pressing Ctrl+n and move to previous by pressing Ctrl+p. Here is the list of important Keyboard shortcuts to manage nested sessions. Ctrl+a ” - List all sessions. Ctrl+a 0 - Switch to session number 0. Ctrl+an -
ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO FIND WHO REBOOTED THE LINUX SYSTEM AND WHEN find who rebooted the Linux system. Also, you can find out which user has rebooted your Linux box by looking at the BASH history file like. $ grep reboot /home/*/.bash_history. The above command will look at all users .bash_history files and display who has rebooted yoursystem.
HOW TO CREATE SSH ALIAS IN LINUX Add all of your remote hosts details like below: Host webserver HostName 192.168.225.22 User sk Host dns HostName server.example.com User root Host dhcp HostName 192.168.225.25 User ostechnix Port 2233. Create SSH Alias In Linux Using SSH Config File. Replace the values of Host, Hostname, User and Port with your own. ENDEAVOUROS ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux.
CRON JOB EXAMPLES ARCHIVES This guide explains what is a cron job, and the basic usage of cron jobs in Linux with example commands. It also outlines a few web-based crontab syntax generators and crontab graphical front-ends which are used to easily create and manage cron jobs in Linux. OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up OSTECHNIX - OPEN SOURCE How To Use MySQL With Ruby On Rails Application. Integrate AppImages To Application Menu Using AppImageLauncher. Bootable USB Electron JavaScript Linux Linux Tips & Tricks Nodejs Opensource Tips and Tricks Unix/Linux Beginners Utilities. Create Bootable USB Drives And SD Cards With Etcher In Linux. HOW TO FIND FILES BASED ON THEIR PERMISSIONS IN LINUX Find Files Based On their Permissions using symbolic notation. In the following examples, we use symbolic notations such as u ( for user), g (group), o (others). We can also use the letter a to represent all three of these categories.The permissions can be specified using letters r (read), w (write), x (executable).. For instance, to find any file with group write permission, run: HOW TO FIX RUST ERROR "LINKER 'CC' NOT FOUND" ON LINUX Since Rust does not include its own linker yet, you need to have a C compiler like gcc installed to act as the linker. To install gcc on Ubuntu, simply run: $ sudo apt install build-essential. If you're on different Linux OS, refer the following link to install development tools which includes necessary applications, such as GNU GCC C/C++ HOW TO FIX BUSYBOX INITRAMFS ERROR ON UBUNTU For those wondering, BusyBox is software suite that provides many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. Initramfs is an initial ram file system based on tmpfs.It contains the tools and scripts required to mount the file systems before the init binary on the real root file HOW TO FIX BROKEN UBUNTU OS WITHOUT REINSTALLING IT Fix Broken Ubuntu OS Without Reinstalling It. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn't work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1. You can learn more about switching between TTYs here. HOW TO PARSE AND PRETTY PRINT JSON WITH LINUX COMMANDLINE JSON data could be parsed with command line text processors like awk, sed and gerp. In fact JSON.awk is an awk script to do that. However there are some dedicated tools for the same purpose. jq or jshon, JSON parser for shell, both of them are quite useful. Shell scripts like JSON.sh or jsonv.sh to parse JSON in bash, zsh or dash shell. HOW TO LIST SYMLINKS ON LINUX List Symlinks On Linux. To list all of the symlinks or symbolic links or soft links in a Linux system, run: $ sudo find / -type l. Here, / - represents the entire filesystem. -type - refers the file type. l - refers the symlink. This command will search for all available symbolic links in the entire filesystem. HOW TO FIX "E: COULD NOT GET LOCK /VAR/LIB/DPKG/LOCK As you can see in the above output, the PID of the process that holds the lock file is 1548.. Just kill it to release the lock using command: $ sudo kill -9 1548 ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO SOLVE "ERROR: RPMDB OPEN FAILED" ERROR IN CENTOS If you ever got into this problem, look nowhere and just do the following steps. First backup the rpm database using command as root user: # mv /var/lib/rpm/__db* /tmp. Then, run the following command: # yum clean all. Now, run the update again: # yum update Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up SHARE AND CONTROL TERMINALS IN REAL TIME FROM WEB BROWSER This guide explains what is TermPair, how it works and how to share and control terminals in real time from web browser with end-to-end encryption using TermPair in Linux. TermPair is a web service that allows anyone to view and control their Terminal sessions in real timefrom a
HOW TO INSTALL PARU AUR HELPER IN ARCH LINUX There are many AUR helper programs exists. One of the popular AUR helper program is Yay.Today we will discuss about yet another AUR helper named Paru, which is based on Yay.. Paru is a new feature packed AUR helper and pacman wrapper program written in Rust programming language. It is developed by the co-developer of Yay AUR helper.. As you already know, Yay is written in GO. ARCH USER REPOSITORY (AUR) ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux
ENABLE PARALLEL DOWNLOADING IN PACMAN IN ARCH LINUX Ask any Arch users why they prefer Arch Linux over other distributions, they will probably point any one or all of the above aforementioned reasons. The pacman package manager is one of the major distinguishing features of Arch Linux. It is fast, easy-to SCREEN COMMAND EXAMPLES TO MANAGE MULTIPLE TERMINAL SESSIONS The number will start from 0. You can move to the next session by pressing Ctrl+n and move to previous by pressing Ctrl+p. Here is the list of important Keyboard shortcuts to manage nested sessions. Ctrl+a ” - List all sessions. Ctrl+a 0 - Switch to session number 0. Ctrl+an -
ALLOW OR DENY SSH ACCESS TO A PARTICULAR USER OR GROUP IN Please note that all commands given below should be run as root or sudo user. 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. Press "i" to HOW TO FIND WHO REBOOTED THE LINUX SYSTEM AND WHEN find who rebooted the Linux system. Also, you can find out which user has rebooted your Linux box by looking at the BASH history file like. $ grep reboot /home/*/.bash_history. The above command will look at all users .bash_history files and display who has rebooted yoursystem.
HOW TO CREATE SSH ALIAS IN LINUX Add all of your remote hosts details like below: Host webserver HostName 192.168.225.22 User sk Host dns HostName server.example.com User root Host dhcp HostName 192.168.225.25 User ostechnix Port 2233. Create SSH Alias In Linux Using SSH Config File. Replace the values of Host, Hostname, User and Port with your own. ENDEAVOUROS ARCHIVES Yay, stands for Yet Another Yaourt, is a reliable AUR helper. Here is how to install Yay AUR helper in Arch Linux, EndeavourOS, ManjaroLinux.
CRON JOB EXAMPLES ARCHIVES This guide explains what is a cron job, and the basic usage of cron jobs in Linux with example commands. It also outlines a few web-based crontab syntax generators and crontab graphical front-ends which are used to easily create and manage cron jobs in Linux.Skip to content
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March 5, 2020
by sk · Published March 5,2020
BACKUP AND RESTORE LINUX DESKTOP SYSTEM SETTINGS WITH DCONF A while ago, I have posted a guide that explained how to reset a Linux desktop settings, tweaks and customization to default state with a single command. Today, we are going to learn how to... Letsencrypt / Linux/ News
March 4, 2020
by sk · Published March 4, 2020 · Last modified March 6, 2020 CHECK IF YOUR DOMAIN IS AFFECTED BY LETSENCRYPT CAA RECHECKING BUG Let’s Encrypt is a non-profit Certificate Authority ( shortly CA) run by ISRG (Internet Security Research Group). They provide SSL/TLS certificates to enable https on millions of websites’ domain for free! Unfortunately, there is bug,...Debian
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Unix/Linux BeginnersMarch 3, 2020
by sk · Published March 3,2020
REMOVE UNNECESSARY CONFIGURATION FILES ON DEBIAN-BASED SYSTEMS If you are a newbie, you would generally use “apt remove” command to remove an installed package in Debian, Ubuntu and its derivatives like Linux Mint. As you probably know, the apt remove command will... Command line utilities/
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March 2, 2020
by sk · Published March 2, 2020 · Last modified March 4, 2020 HOW TO SECURELY SHARE FILES FROM COMMANDLINE WITH FFSEND IN LINUX Thanks to Mozilla foundation, we have a free, online file-sharing service named Firefox Send which allows us to share file easily and securely over Internet with end-to-end encryption. Even though it’s very easy to share...File Transfer /
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February 28, 2020
by sk · Published February 28, 2020 · Last modified March 4, 2020 HOW TO SECURELY SHARE FILES OVER INTERNET WITH FIREFOX SEND Nowadays, file sharing between Computers has become incredibly easy! A plethora of tools and private/public cloud services are available to share files locally or somewhere else via Internet. Today, we will seeone such tool...
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February 27, 2020
by sk · Published February27, 2020
HOW TO CREATE AND LAUNCH UBUNTU VMS WITH MULTIPASS ON LINUX There are multitude of programs and tools available for deploying Ubuntu VMs for testing and learning purposes. Some of them are Docker, LXD, LXC, Proxmox, VirtualBox and Vmware etc. I use Virtualbox oftenfor testing...
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February 26, 2020
by sk · Published February26, 2020
HOW TO SEARCH DUCKDUCKGO FROM COMMANDLINE USING DDGR We already know how to Google search from commandline in Linux using Googler CLI utility. Today, we are going to see how to search DuckDuckGo from commandline using ddgr in Linux. Ddgr is acommandline...
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February 25, 2020
by sk · Published February 25, 2020 · Last modified February 26, 2020 HOW TO GOOGLE SEARCH FROM COMMANDLINE USING GOOGLER Google Search is the top most used search engine on the Web. Compared to other search engines, such as Baidu, DuckDuckGo and Yandex etc., Google search still holds the position of most popular searchengine,...
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February 22, 2020
by sk · Published February 22, 2020 · Last modified February 24, 2020 HOW TO CHECK IF YOU ARE IN SCREEN SESSION OR NOT IN LINUX This brief guide explains how to check if you are in Screen session or not in Linux. As you might have noticed, when you launch a Tmux session, you will obviously see the session details,...FAQ / GNU Screen
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Unix/Linux BeginnersFebruary 21, 2020
by sk · Published February21, 2020
HOW TO AUTOSTART SCREEN SESSION ON LINUX WHEN LOGGING IN A few days ago, we have seen how to autostart Tmux session whenever you log in to a Linux system either locally or remotely via SSH. Today, we are going to see how to autostart...Page 1 of 9212 3
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