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Command: what | Section: 1 | Source: OpenBSD | File: what.1
WHAT(1) FreeBSD General Commands Manual WHAT(1)
NAME
what - show what versions of object modules were used to construct a file
SYNOPSIS
what [-s] file ...
DESCRIPTION
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.
STANDARDS
The what utility is compliant with the X/Open System Interfaces option of
the IEEE Std 1003.1-2008 ("POSIX.1") specification.
Processing $sysname$ sequences is an OpenBSD extension.
HISTORY
The what command first appeared in the SCCS package and was rewritten for
4.0BSD for licensing reasons.
FreeBSD 14.1-RELEASE-p8 March 31, 2022 FreeBSD 14.1-RELEASE-p8