Community Questions
Join the discussion, find answers, and help others.
How to search text in files using grep
I need to find files containing specific text. How do I use grep effectively?
How to manage services with systemd
I need to manage services like starting, stopping, and enabling at boot. How?
How to use rsync for backups
I need to synchronize files between servers. How do I use rsync effectively?
How to secure SSH with fail2ban
My server is getting too many failed SSH login attempts. How can I block them?
How to change timezone on Linux
My server shows wrong time. How do I change the timezone?
How to monitor network traffic on Linux
I want to see what network traffic is happening on my server. What tools can I use?
How to use screen or tmux for persistent sessions
My SSH session disconnects and kills my running processes. How can I keep them running?
How to check system uptime and reboot history
How can I see how long my server has been running and when it was last rebooted?
How to install software from source on Linux
I need to install a program that is not available in the package manager. How do I compile from source?
How to check and free up RAM on Linux
My server is running slow. How do I check memory usage and free up RAM?
How to mount and unmount drives on Linux
I connected a new drive. How do I mount it and access the files?
How to set environment variables permanently
How do I set environment variables that persist after reboot?
How to view and manage running processes
How do I see what processes are running and manage them?
How to find files by name on Linux
I need to search for files by name. What commands can I use?
How to copy files between servers using SCP
I need to transfer files from one server to another. How do I use scp?
How to check open ports on Linux
How can I see which ports are open and listening on my server?
How to create a new user on Linux
I need to add a new user with sudo privileges. What are the steps?
How to check Linux kernel version
What command shows the Linux kernel version? I need to verify it for compatibility.
How to change hostname on Linux
I need to change my server hostname. What is the correct way to do this on modern Linux systems?
How to compress and extract tar.gz files on Linux
How do I create and extract .tar.gz archives on Linux from the command line?