Date: Sat, 20 Jun 2020 11:20:16 +0000 (UTC) From: =?UTF-8?Q?Fernando_Apestegu=c3=ada?= <fernape@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362434 - head/usr.bin/cmp Message-ID: <202006201120.05KBKGwC091366@repo.freebsd.org>
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Author: fernape (ports committer) Date: Sat Jun 20 11:20:16 2020 New Revision: 362434 URL: https://svnweb.freebsd.org/changeset/base/362434 Log: cmp(1): Add EXAMPLES section Add a small number of examples depicting the use of -l, -z and byte offsets Approved by: 0mp@ Modified: head/usr.bin/cmp/cmp.1 Modified: head/usr.bin/cmp/cmp.1 ============================================================================== --- head/usr.bin/cmp/cmp.1 Sat Jun 20 08:22:57 2020 (r362433) +++ head/usr.bin/cmp/cmp.1 Sat Jun 20 11:20:16 2020 (r362434) @@ -31,7 +31,7 @@ .\" @(#)cmp.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd June 16, 2020 +.Dd June 20, 2020 .Dt CMP 1 .Os .Sh NAME @@ -107,26 +107,33 @@ file (before any differences were found). An error occurred. .El .Sh EXAMPLES -Assuming a file named example.txt with the following contents: +Assuming a file named +.Pa example.txt +with the following contents: .Bd -literal -offset indent a b c .Ed .Pp -Compare stdin with example.txt: +Compare stdin with +.Pa example.txt : .Bd -literal -offset indent $ echo -e "a\\nb\\nc" | cmp - example.txt .Ed .Pp -Same as above but introducing a change in byte three in stdin. +Same as above but introducing a change in the third byte of stdin. Show the byte number (decimal) and differing byte (octal): .Bd -literal -offset indent $ echo -e "a\\nR\\nc" | cmp -l - example.txt 3 122 142 .Ed .Pp -Compare example.txt and /boot/loader.conf exiting if size differs. +Compare file sizes of +.Pa example.txt +and +.Pa /boot/loader.conf +and return 1 if they are not equal. Note that .Fl z can only be used with regular files: @@ -135,8 +142,10 @@ $ cmp -z example.txt /boot/loader.conf example.txt /boot/loader.conf differ: size .Ed .Pp -Compare stdin with file example.txt omitting the 4 first bytes from stdin and -the 2 first bytes from example.txt: +Compare stdin with +.Pa example.txt +omitting the first 4 bytes from stdin and the first 2 bytes from +.Pa example.txt : .Bd -literal -offset indent $ echo -e "a\\nR\\nb\\nc" | cmp - example.txt 4 2 .Ed
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