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How to Disable SSH Root Login in Linux

Sometimes you may need to SSH root login in Linux. Here are the steps to disable SSH root login in Linux.

Sometimes you may need to open, extract RAR files in Linux. Here is how to do it using Unrar utility tool.

Sometimes you may need to disable package updates in Linux. Here is how to stop Linux package update in Ubuntu.

Sometimes you may need to generate PGP key in Linux. In this article, we will look at how to generate PGP key in Ubuntu.

Sometimes you may need to save shell script output to file or redirect its output to file. Here is how to log shell script output to file.

Sometimes you may need to find which process is running on port. Here is how to find PID of process running on port.

Sometimes you may need to check if a port is open or in use. Here are some commands to find out if a port is open or closed in Linux.

Sometimes you may need to find out if your Linux kernel is 32-bit or 64-bit. Here is how to determine kernel architecture in Linux.

Sometimes you may need to monitor crontab logs in Linux. Here is the command to check crontab logs in Linux.