To find out the version of a MySQL server running on your system, you can use the following command in the MySQL command-line client: SELECT VERSION(); Running this command in the MySQL command-line client will display the version number of the MySQL server that you are currently connected to. For example, running this command might … Read more

To show the version of the Linux distribution that you are currently running, you can use the following command: lsb_release -a Running this command in a terminal will display the version of the Linux distribution, as well as other information such as the release codename, description, and more. For example, running this command on an … Read more

To find the version of the Linux kernel that is currently running on your system, you can use the following command: uname -r Running this command in a terminal will display the kernel version number, for example: 5.13.0-28-generic The output of this command shows the major version number (5 in the example), the minor version … Read more

To change the CPU frequency on all logical cores of an AMD Phenom II or AMD Athlon II processor in Linux, you can use the cpufrequtils package. Here are the steps to do so: Install the cpufrequtils package by running the following command in the terminal: sudo apt-get install cpufrequtils This will install the cpufrequtils … Read more

Ksplice is a technology that allows you to apply updates to the Linux kernel without having to reboot the system. This can be very useful in situations where you need to keep your system running continuously without any downtime. Here’s how you can update the Linux kernel with Ksplice: Check whether your system is compatible … Read more

To uninstall a .deb package in Ubuntu, you can use the dpkg command. Here are the steps to uninstall a .deb package: Open the terminal by pressing Ctrl + Alt + T. Type the following command and press Enter: sudo dpkg -r package_name Replace package_name with the name of the package you want to uninstall. … Read more

To find files by date and list files modified on a specific date in Linux, you can use the find command and specify the date range or exact date you want to search for. Here are two examples: To find files modified within a date range: find /path/to/search -type f -newermt yyyy-mm-dd -and ! -newermt … Read more

To find all empty files on a UNIX/Linux system, you can use the find command along with the size option and the exec option to execute a command on each file that matches the size criterion. Here’s the command to find all empty files: find /path/to/search -type f -size 0 -exec ls -l {} \; … Read more

To find files owned by a specific user on Linux, you can use the find command with the -user option. Here’s an example command that finds all files in the home directory of user “username”: find /home/username -user username In this command, replace “username” with the actual username you want to search for. The command … Read more

To check if a file is empty or not using a shell script in Linux or UNIX, you can use the test command with the -s option, which checks if the file is non-empty. Here’s an example shell script that checks if a file is empty or not: #!/bin/bash if [ -s “/path/to/file” ] then … Read more