Re: Bug in "cmp" man page: missing exit status value

[Micah Cowan]

(2011年10月08日 11:08), Bruce Korb wrote:
> On 10/08/11 10:44, Micah Cowan wrote:
>> (2011年10月05日 07:36), David Booth wrote:
>>> The man page for cmp says of the -s option: "Output nothing; yield exit
>>> status only."  But nowhere does it say what that exit status will be.
>
>> Hm. In my copy it's there:
>> "Exit status is 0 if inputs are the same, 1 if different, 2 if trouble."
>>
>> Could be different versions of diffutils, but then that only begs the
>> question as to why you didn't mention a version (as is customary in bug
>> reports). :)
>>
>> Additionally, please note that GNU is not in the habit of placing the
>
> Hi Micah,
>
> Be careful which man page you look at.  There are two:  the one by
> diffutils and the other from the Austin group (POSIX).  Current POSIX
> says to have an EXIT STATUS section for POSIX specified commands.
> coreutils creates man pages by massaging the usage output.  Does
> diffutils follow this model?  I ask because the usage text
> never contains exit status.

In my copy of cmp, it does. I just checked, it's not a Debianization;
it's in the official GNU tools. "Never say never", at least without
bothering to check first. ;)

Did you really think I was referring to a POSIX manpage, on a system
where I have GNU cmp installed (and where my quote's text differed
substantially from the POSIX quote you gave)?

-mjc