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32.\"     @(#)what.1	8.1 (Berkeley) 6/6/93
33.\"
34.Dd October 13, 2006
35.Dt WHAT 1
36.Os
37.Sh NAME
38.Nm what
39.Nd "show what versions of object modules were used to construct a file"
40.Sh SYNOPSIS
41.Nm what
42.Op Fl s
43.Op Ar file Op Ar ...
44.Sh DESCRIPTION
45.Nm
46reads each
47.Ar file
48and searches for sequences of the form
49.Dq \&@(#)
50as inserted by the source code control system.
51It prints the remainder
52of the string following this marker, up to a NUL, newline, double
53quote, backslash, or
54.Ql >
55character.
56.Pp
57If the
58.Fl s
59option is specified, only the first occurrence of an identification string in
60each file is printed.
61.Sh EXIT STATUS
62The
63.Nm
64utility exits with a return value of 0 if any identification strings were found,
65or with a return value of 1 otherwise.
66.Sh STANDARDS
67The
68.Nm
69utility is expected to be a superset of the
70.St -p1003.1
71specification.
72In
73.Mx 5
74and up, the ability to operate on standard input is restored.
75.Sh HISTORY
76The
77.Nm
78command appeared in
79.Bx 4.0 .
80.Sh BUGS
81As
82.Bx
83is not licensed to distribute
84.Tn SCCS ,
85this is a rewrite of the
86.Nm
87command which is part of
88.Tn SCCS .
89As such it may not behave exactly the same as that
90command does.
91