sshd command

 For communication and checking sshd service we can use sshd command.

ps -p

Sometimes we need find process via number of PID. Welcome to lesson of ps -p!

How to remove files with ignore case sensitivity?

 

How to remove files with ignore case sensitivity? 

groupmems

What is groupmems? 

find - user and group

Linux command find is very important. Today we will learn how to find with ownerships. Let's do it. 

vigr

 edit /etc/group via vigr: 

Regular expressions and [ ]

 Regular expressions and [ ]