RTFM 2018-01-21 RTFM = Read The Fucking Manual How to know which parameters to use with a command? In GNU/Linux you can usually issue a command with '--help' parameter, which will display a help page for you. If not, try '-h', '-H', '-?' or none parameters. You can read man(ual) pages with: $ man If you're not sure what you're looking for, try: $ apropos If you don't know what a command does, there is: $ whatis and on Arch Linux (for packages): $ pacman -Qi on Debian-based distros that would be: $ apt show For online man pages check 'info' command, it seems to work just like 'man'. If you don't know where a certain program is, you can use: $ whereis If you're still clueless STFW. STFW = Search the *Friendly* Web Remember not to use proprietary search engines (Google/Bing). I suggest https://searx.me/ https://stackoverflow.com/ is your friend. Here's some more refference: http://www.catb.org/~esr/faqs/smart-questions.html Read before you post.