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Add a section documenting the return values from diff.

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PR:		docs/59991
Submitted by:	keramida,Erik Greenwald <erik@smluc.org>
MFC After:	1 week
This commit is contained in:
Ceri Davies 2004-02-01 13:52:19 +00:00
parent cf3b2baf6d
commit 92f367e5f2
1 changed files with 5 additions and 0 deletions
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gnu/usr.bin/diff/diff.1
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@ -474,6 +474,11 @@ match any pattern contained in
.TP
.B \-y
Use the side by side output format.
.SH RETURN VALUE
.I diff
returns 0 if the files are identical or 1 if the files differ.
If one or both of the files cannot be opened,
then the return value is set to 2.
.SH ENVIRONMENT
The environment variable
.B DIFF_OPTIONS