Date: Sun, 3 Oct 2021 05:20:53 GMT From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: ca052baa603a - stable/12 - cmp(1): Add EXAMPLES section Message-ID: <202110030520.1935KrAW020848@gitrepo.freebsd.org>
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The branch stable/12 has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=ca052baa603aa5743c616d89c2fb2dfdb6fcd4ea commit ca052baa603aa5743c616d89c2fb2dfdb6fcd4ea Author: Fernando Apesteguía <fernape@FreeBSD.org> AuthorDate: 2020-06-20 11:20:16 +0000 Commit: Kyle Evans <kevans@FreeBSD.org> CommitDate: 2021-10-03 05:19:56 +0000 cmp(1): Add EXAMPLES section Add a small number of examples depicting the use of -l, -z and byte offsets (cherry picked from commit 1831993577db18d193e94269e337f6286536814e) --- usr.bin/cmp/cmp.1 | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/usr.bin/cmp/cmp.1 b/usr.bin/cmp/cmp.1 index 094509dda08b..fc05fb893147 100644 --- a/usr.bin/cmp/cmp.1 +++ b/usr.bin/cmp/cmp.1 @@ -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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