to install an app : sudo apt-get install
ls => list the cotents in the cureent directory command => (ls) ls -l => show more content details in the directory
help command: man -> used to give mannual ex : man ls maullal of ls(use / for search operation) help -> used to show less detail help ex : ls --help help how to use apropos -> used to find ommands which we need to use ex : apropos (operation need to be perform),apropos list show all comands usedd to list we need to go thrugh it to find the commands stat -> display file or file system status
move the curser: ctr -A : starting line ctr -e : end line ctr - u : delete the before line commands ctr - k : delete back word commands