what1
Show what versions of object modules were used to construct a file
Usage
what [-s]
file ...
Overview
what reads each file and searches for sequences of either the form ‘$’ immediately followed by the system name (sysname) as defined by uname(3), or the form “@(#)” as inserted by the source code control system (SCCS).
When ‘$’ followed by the system name is encountered, what prints the remainder of the string up to a ‘$’ or any non-printable character.
When “@(#)” is encountered what prints the remainder of the string, up to a NUL, newline, double quote, backslash, or ‘>’ character.
If the -s option is specified, only the first occurrence of an identification string in each file is printed.
Exit status
The what utility exits with a return value of 0 if any identification strings were found, or with a return value of 1 otherwise.
Releases
61 releases since OpenBSD 2.1; the text changed 14 times.