shell - how to get the full name of a linux command

Question

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

ls = list
cat = concatenate
man = manual

The full names of the above can be seen from manual.

So, how to get the full name of tee? From manual and info page, we can’t tell what the full name of tee is. .

So how do you find the full names of other commands? Is there a certain way?

Answer 1

Command names in Linux are not necessarily the abbreviation of a certain word or phrase.
For example, awk is the first letter of the names of the three authors of this language; awk是这款语言三名作者名字的首字母；
而tee则来自于TAnd tee comes from T, which is a term for line workers. Represents a T-shaped pipeline splitter.

Answer 2

tee就是T, that is, the three-way pipe

What is written in man may be more appropriately called origin

Answer 3

You can refer to What does {some strange unix command name} stand for?. It has the meaning of awk, grep, teeand other strange command names.

Answer 4

If you think about it the other way around, you will know that the full name is not listed because tee is already the full name.