what(1) — USER COMMANDS
NAME
what − print identification strings
SYNOPSIS
what [−s] files
DESCRIPTION
what searches the given files for all occurrences of the pattern that the get command substitutes for %Z% (this is @(#) at this printing) and prints out what follows until the first ", >, new-line, \, or null character. For example, if the C program in file f.c contains:
#ident "@(#)identification information"
and f.c is compiled to yield f.o and a.out, the command:
what f.c f.o a.out
prints:
f.c:
identification information
f.o:
identification information
a.out:
identification information
what is intended to be used in conjunction with the get command, which automatically inserts identifying information, but it can also be used where the information is inserted manually. Only one option exists:
−s quit after finding the first occurrence of pattern in each file
EXAMPLE
If test1.c has the following string:
#ident "@(#)1 test1.c2";
entering:
what test1.c
would print the following:
test1.c:
1 test1.c2
INTERNATIONAL FUNCTIONS
files can be specified using characters from supplementary code sets.
Characters from supplementary code sets can be used for identification information.
SEE ALSO
DIAGNOSTICS
Exit status is 0 if any matches are found, otherwise 1. See help(1) for explanations.
— Source Code Control System Utilities