what
—
show what versions of object modules were used to construct a
file
The what
utility searches each specified
file for sequences of the form
“@(#)
” as inserted by the SCCS source
code control system. It prints the remainder of the string following this
marker, up to a NUL character, newline, double quote,
‘>
’ character, or backslash.
The following options are available:
-q
- Only output the match text, rather than formatting it.
-s
- Stop searching each file after the first match.
Exit status is 0 if any matches were found, otherwise 1.
The what
utility conforms to IEEE Std
1003.1-2001 (“POSIX.1”). The -q
option is a non-standard FreeBSD extension which may
not be available on other operating systems.
The what
command appeared in
4.0BSD.
This is a rewrite of the SCCS command of the same name, and behavior may not be
identical.