How to save a command output to a file in Linux
We all know that by default every command output is displayed on the terminal after execution. The output of a command can be used as a variable or input to …
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Linux tee command with examples
The tee command reads standard input (stdin) and writes the result to standard output (stdout) and one or more files simultaneously. It basically displays the command output on the terminal …
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How to create a systemd service unit file in Linux
systemd is a system and service manager for Linux operating systems. When you install any application from a repository, it will drop a service unit file into the systemd directory …
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How to manage systemd units with systemctl
In this article, we’ll show you how to manage the systemd units using systemctl command. What’s systemd? systemd is a system and service manager for modern Linux operating systems, which …
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How to install Multimedia Codecs in Linux
By default, the Linux system cannot play most video files that are in encrypted formats (proprietary media formats) if you do not have the required Media Codecs installed on your …
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How to configure firewalld rules in Linux
The firewall is essential for controlling the flow of network traffic in and out of the Linux server. It enables users to control incoming network traffic on host machines by …
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How to lock & unlock multiple users in Linux
‘usermod’ & ‘passwd’ commands are used to lock or unlock one user account at a time, but you may need to write some small shell scripts to perform this action …
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How to Kill user sessions in Linux
Sometimes we might need to kill a user session in Linux based on requests, which can be done by sending SIGNALS with kill command. We need to send one of …
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How to become a ‘root user’ in Linux?
root user is a privileged user in Linux, which is similar to an administrator in Windows. All kind of administrative operations can be performed using root user privilege hence it …
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How to execute a command or script at reboot or startup
Well-known services in Linux can be added on boot time without any problems, because most of them come with their own script, which is done using ‘chkconfig’ and ‘systemctl’ commands. …
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