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Just for fun.
when working under a cli sometime you need to list the files with ls
but u can open gnome file browser with the command 'gnome-open .' under current directory
when we work with terminal often we open man pages for help if we did some mistakes
and when we want to open the man page for command we are working with this one helps
as many people may be knowing that '!!' performs the last command action
we use it in sudo !! to perform the last action with root previleages
man !! will also be helpful and handy
generally we cannot use control + v to paste text copied in clipboard
but by pressing control and holding it press shift and v