Rahul Sahu

You can use the following command to check the version of a specific package installed on a Debian or Ubuntu Linux system using the apt-get command: apt-cache policy package_name Alternatively, you can use the following command to achieve the same result using the aptitude command: aptitude show package_name In both commands, replace package_name with the … Read more

You can use the following command to forcefully stop and kill a Linux container managed by LXC: lxc-stop -k -n container_name The -k option is used to kill the container, and the -n option specifies the name of the container you want to stop and kill. Note that this will abruptly terminate any processes running … Read more

You can use the following command to remove duplicate lines from a text file using awk: awk ‘!seen[$0]++’ file.txt > file_without_duplicates.txt Alternatively, you can use the following command to achieve the same result using perl: perl -ne ‘print unless $seen{$_}++’ file.txt > file_without_duplicates.txt These commands will read the contents of file.txt line by line and … Read more

You can use the following command to gzip and keep the original file on a Unix or Linux command line: gzip -c file.txt > file.txt.gz This will create a gzipped file file.txt.gz and keep the original file.txt intact. The -c option tells gzip to write the output to standard output, which is redirected to a … Read more

To install MySQL 5.7 on Ubuntu 16.04, follow these steps: Add the MySQL repository to the system: wget https://dev.mysql.com/get/mysql-apt-config_0.8.10-1_all.deb sudo dpkg -i mysql-apt-config_0.8.10-1_all.deb Update the package list: sudo apt-get update Install the MySQL server package: sudo apt-get install mysql-server-5.7 Start the MySQL service: sudo systemctl start mysql Verify the MySQL installation: mysql -u root -p … Read more

The apt command is a powerful package management tool for Debian-based systems such as Ubuntu and Debian Linux. Here are some common apt command examples: Update the package list: sudo apt update Upgrade installed packages: sudo apt upgrade Install a package: sudo apt install package-name Remove a package: sudo apt remove package-name Purge a package … Read more

You can change a user password in Ubuntu Linux by using the passwd command. To change the password of the current user, simply run the following command in a terminal: passwd To change the password of another user, you need to have root privileges. You can use the sudo command to run the passwd command … Read more

You can install Skype on Debian Linux 9 by following these steps: Add the Skype repository to your sources list: Open a terminal window Run the following command: echo “deb [arch=amd64] https://repo.skype.com/deb stable main” | sudo tee /etc/apt/sources.list.d/skype-stable.list Download and add the Skype GPG key to your system: Run the following command: wget https://repo.skype.com/data/SKYPE-GPG-KEY sudo … Read more

To become a superuser (root user) on Ubuntu Linux, you can either use the su command or the sudo command. Using su: Open the terminal Type su and press Enter Enter the root user password when prompted You are now the superuser and your shell prompt should show a “#” symbol instead of “$” Using … Read more

Here are the steps to set up an OpenVPN server on Ubuntu Linux in 5 minutes: Install OpenVPN: sudo apt-get update sudo apt-get install openvpn easy-rsa Copy the sample OpenVPN configuration files: sudo cp /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz /etc/openvpn/ sudo gzip -d /etc/openvpn/server.conf.gz Modify the OpenVPN configuration file: sudo nano /etc/openvpn/server.conf Change the proto setting to udp or … Read more