Rahul Sahu

To copy files remotely on Linux using scp, the basic syntax is: scp [source file] [username]@[remote host]:[destination] For example, to copy a file called “file.txt” from your local machine to a remote host called “example.com” in the user’s home directory, you would use the following command: scp file.txt user@example.com:~/ To copy files remotely on Linux … Read more

There are a few ways to convert a man page to HTML on Linux and Unix. One method is to use the command line tool “groff” to format the man page as HTML. Here is an example command: groff -mandoc -Thtml manpage.1 > manpage.html Another method is to use the command line tool “man2html” to … Read more

To uninstall Nginx on Ubuntu or Debian Linux, you can use the following steps: Stop the Nginx service by running the following command: sudo systemctl stop nginx Remove the Nginx package and its dependencies by running the following command: sudo apt-get remove nginx -y To remove the configuration files and any other files that were … Read more

To install Docker on an Amazon Linux 2 EC2 instance, you can use the following steps: Connect to your EC2 instance via SSH. Update the package index by running the following command: sudo yum update -y Add the Docker repository to your system by running the following command: sudo amazon-linux-extras install docker Install Docker by … Read more

o set or change the hostname on an Amazon Linux EC2 instance, you can use the hostnamectl command. Here are the steps to set the hostname: Connect to your EC2 instance via SSH. Use the following command to set the hostname: sudo hostnamectl set-hostname new-hostname Replace new-hostname with the desired hostname. Verify the hostname has … Read more

You can switch the boot target to text or GUI mode in a system running Linux with systemd by performing the following steps: To switch to text mode, enter the following command in the terminal: sudo systemctl set-default multi-user.target To switch to GUI mode, enter the following command in the terminal: sudo systemctl set-default graphical.target … Read more

You can reinstall a package on a system running CentOS or RHEL using the dnf command. The dnf command is a package manager for RPM-based Linux distributions, such as CentOS and RHEL. Here’s an example of how to reinstall a package using the dnf command: sudo dnf reinstall package_name This command will reinstall the package … Read more

You can disable core dumps in Linux, including systems that use systemd, by performing the following steps: Change the core dump pattern to prevent core dumps from being written to disk by adding the following line to the file /etc/sysctl.conf: fs.suid_dumpable = 0 Reload the sysctl configuration by running: sudo sysctl -p Check if core … Read more

Upgrading Debian 10 to Debian 11 Bullseye using the command line interface (CLI) involves several steps: Make sure your system is up-to-date by running: sudo apt update && sudo apt upgrade Backup your important data and configuration files, it’s always a good idea to have a backup before upgrading. Edit the sources list file /etc/apt/sources.list … Read more

The “find” command is a powerful command-line utility that can be used to search for files and directories in one or more directories. Here’s an example of how to search for files with the “.txt” extension in the directories “/home/user/dir1” and “/home/user/dir2”: find /home/user/dir1 /home/user/dir2 -name “*.txt” This command uses the “find” command with the … Read more