Date: Sat, 16 Mar 2013 22:53:39 +0000 (UTC) From: Joel Dahl <joel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r248393 - in head/usr.bin: head tail Message-ID: <201303162253.r2GMrdNi039700@svn.freebsd.org>
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Author: joel (doc committer) Date: Sat Mar 16 22:53:38 2013 New Revision: 248393 URL: http://svnweb.freebsd.org/changeset/base/248393 Log: Add a couple of examples. Obtained from: OpenBSD Modified: head/usr.bin/head/head.1 head/usr.bin/tail/tail.1 Modified: head/usr.bin/head/head.1 ============================================================================== --- head/usr.bin/head/head.1 Sat Mar 16 22:53:05 2013 (r248392) +++ head/usr.bin/head/head.1 Sat Mar 16 22:53:38 2013 (r248393) @@ -28,7 +28,7 @@ .\" @(#)head.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd June 6, 1993 +.Dd March 16, 2013 .Dt HEAD 1 .Os .Sh NAME @@ -57,6 +57,19 @@ where is the name of the file. .Sh EXIT STATUS .Ex -std +.Sh EXAMPLES +To display the first 500 lines of the file +.Ar foo : +.Pp +.Dl $ head -n 500 foo +.Pp +.Nm +can be used in conjunction with +.Xr tail 1 +in the following way to, for example, display only line 500 from the file +.Ar foo : +.Pp +.Dl $ head -n 500 foo | tail -n 1 .Sh SEE ALSO .Xr tail 1 .Sh HISTORY Modified: head/usr.bin/tail/tail.1 ============================================================================== --- head/usr.bin/tail/tail.1 Sat Mar 16 22:53:05 2013 (r248392) +++ head/usr.bin/tail/tail.1 Sat Mar 16 22:53:38 2013 (r248393) @@ -31,7 +31,7 @@ .\" @(#)tail.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd June 5, 2009 +.Dd March 16, 2013 .Dt TAIL 1 .Os .Sh NAME @@ -147,6 +147,17 @@ is the name of the file unless flag is specified. .Sh EXIT STATUS .Ex -std +.Sh EXAMPLES +To display the last 500 lines of the file +.Ar foo : +.Pp +.Dl $ tail -n 500 foo +.Pp +Keep +.Pa /var/log/messages +open, displaying to the standard output anything appended to the file: +.Pp +.Dl $ tail -f /var/log/messages .Sh SEE ALSO .Xr cat 1 , .Xr head 1 ,
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