Date: Mon, 27 Jul 2020 15:25:04 +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: r363611 - head/usr.bin/truncate Message-ID: <202007271525.06RFP4JU012992@repo.freebsd.org>
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Author: fernape (ports committer) Date: Mon Jul 27 15:25:04 2020 New Revision: 363611 URL: https://svnweb.freebsd.org/changeset/base/363611 Log: truncate(1): Add EXAMPLES section Add four simple examples showing the use of -c, -r and -s Approved by: manpages (bcr@) Differential Revision: https://reviews.freebsd.org/D25774 Modified: head/usr.bin/truncate/truncate.1 Modified: head/usr.bin/truncate/truncate.1 ============================================================================== --- head/usr.bin/truncate/truncate.1 Mon Jul 27 15:09:07 2020 (r363610) +++ head/usr.bin/truncate/truncate.1 Mon Jul 27 15:25:04 2020 (r363611) @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 19, 2006 +.Dd July 27, 2020 .Dt TRUNCATE 1 .Os .Sh NAME @@ -143,6 +143,43 @@ If the operation fails for an argument, .Nm will issue a diagnostic and continue processing the remaining arguments. +.Sh EXAMPLES +Adjust the size of the file +.Pa test_file +to 10 Megabytes but do not create it if it does not exist: +.Bd -literal -offset indent +truncate -c -s +10M test_file +.Ed +.Pp +Same as above but create the file if it does not exist: +.Bd -literal -offset indent +truncate -s +10M test_file +ls -l test_file +-rw-r--r-- 1 root wheel 10485760 Jul 22 18:48 test_file +.Ed +.Pp +Adjust the size of +.Pa test_file +to the size of the kernel and create another file +.Pa test_file2 +with the same size: +.Bd -literal -offset indent +truncate -r /boot/kernel/kernel test_file test_file2 +ls -l /boot/kernel/kernel test_file* +-r-xr-xr-x 1 root wheel 31352552 May 15 14:18 /boot/kernel/kernel* +-rw-r--r-- 1 root wheel 31352552 Jul 22 19:15 test_file +-rw-r--r-- 1 root wheel 31352552 Jul 22 19:15 test_file2 +.Ed +.Pp +Downsize +.Pa test_file +in 5 Megabytes: +.Bd -literal -offset indent +# truncate -s -5M test_file +ls -l test_file* +-rw-r--r-- 1 root wheel 26109672 Jul 22 19:17 test_file +-rw-r--r-- 1 root wheel 31352552 Jul 22 19:15 test_file2 +.Ed .Sh SEE ALSO .Xr dd 1 , .Xr touch 1 ,
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