Re: builtin_name --help

[Chet Ramey]

On 9/19/25 10:28 AM, pourko--- via Bug reports for the GNU Bourne Again SHell wrote:

Sep 19, 2025, 09:14 by andreas.kah...@abc.se:

Should I somehow *assume* that "--help" is supported?

Actually, yes. If there is only one thing that you would reasonably
assume about any command -- then this would be it. :-)

When you encounter an unfamiliar command, you don't immediately rush
to find its documentation -- No, you first try "--help" -- and that is
a reasonable assumption.

Not all the world is Linux.

$ /bin/cp --help
/bin/cp: illegal option -- -
usage: cp [-R [-H | -L | -P]] [-fi | -n] [-aclpSsvXx] source_file target_file

$ echo $?
64

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    c...@case.edu    http://tiswww.cwru.edu/~chet/

cp [-R [-H | -L | -P]] [-fi | -n] [-aclpSsvXx] source_file ... target_directory

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