How to recover /etc/passwd file and /etc/shadow file?
Explain the free command.
What is the difference between locating and locate command?
What is an os command?
How can I check the exit status of my previous command in Linux operating system?
How do I check dns entry?
What is tty name?
What is difference between egrep and grep?
What does pwd mean in linux?
What does c mean in linux?
How much ram do I have linux?
What does (cd dir && command) do?
How do I set permission to run in linux?
How do you do nslookup?
What is know about grep commands?