From: Bernhard Voelker <mail@bernhard-voelker.de>
Date: Tue, 3 Jul 2012 07:42:55 +0000 (+0200)
Subject: utmpdump: document optional filename argument
X-Git-Tag: v2.22-rc1~180
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4810de912a9d4fa76dba3c7be16a8da86225aa9f;p=thirdparty%2Futil-linux.git

utmpdump: document optional filename argument

Signed-off-by: Bernhard Voelker <mail@bernhard-voelker.de>
---

diff --git a/login-utils/utmpdump.1 b/login-utils/utmpdump.1
index 65dfe329d2..4df49dd99e 100644
--- a/login-utils/utmpdump.1
+++ b/login-utils/utmpdump.1
@@ -21,10 +21,13 @@ utmpdump \- dump UTMP and WTMP files in raw format
 .SH SYNOPSIS
 .B utmpdump
 .RB [ \-frh ]
-.I filename
+.I [ filename ]
 .SH DESCRIPTION
 \fButmpdump\fP is a simple program to dump UTMP and WTMP files
 in raw format, so they can be examined.
+\fButmpdump\fP reads from stdin unless a
+.I filename
+is passed.
 .SH OPTIONS
 .IP "\fB\-f, \-\-follow\fP"
 output appended data as the file grows.
diff --git a/login-utils/utmpdump.c b/login-utils/utmpdump.c
index ac072d4b41..fd3e74a32f 100644
--- a/login-utils/utmpdump.c
+++ b/login-utils/utmpdump.c
@@ -190,7 +190,7 @@ static void __attribute__((__noreturn__)) usage(FILE *out)
 	fputs(USAGE_HEADER, out);
 
 	fprintf(out,
-		_(" %s [options]\n"), program_invocation_short_name);
+		_(" %s [options] [filename]\n"), program_invocation_short_name);
 
 	fputs(USAGE_OPTIONS, out);
 	fputs(_(" -f, --follow           output appended data as the file grows\n"