Linux commands: man
A quick guide to the `man` command, used to learn how to use command line commands
Every time I don’t know how to use a command, I type man <command>
to get the manual:
This is a man (from manual) page. Man pages are an essential tool to learn, as a developer. They contain so much information that sometimes it’s almost too much.
The above screenshot is just 1 of 14 screens of explanation for the ls
command.
Man pages are diveded into 7 different groups, identified by a number:
1
is user commands2
is kernel system calls3
is C library functions4
is devices5
is files formats and filesystems6
is games7
is miscellaneous commands, conventions and overviews8
is superuser and system administrator commands
Most of the times when I’m in need to learn a command quickly I use this site called tldr pages: https://tldr.sh/. It’s a command you can install, then you run it like this: tldr <command>
, which gives you a very quick overview of a command, with some handy examples of common usage scenarios:
This is not a substitute for man
, but a handy tool to avoid losing yourself in the huge amount of information present in a man page. Then you can use the man page to explore all the different options and parameters you can use on a command.
The
man
command works on Linux, macOS, WSL, and anywhere you have a UNIX environment
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