How to get the full name of linux command

  linux, question

How to get the full name of a linux command.
For example:

ls = list
 cat = concatenate
 man = manual

All of the above can be obtained frommanualSee the full name in.

So,teeHow to get the full name of? FrommanualAndinfo pageI can’t see it at allteeWhat is the full name of?

So how do you find the full name of some other orders and whether there is a certain way?

Command names in linux are not necessarily abbreviations of a word or phrase.
Such asawkIt is the initials of the names of the three authors of this language.
AndteeIt comes fromT, a term used by pipeline workers, represents a T-shaped pipeline splitter.