D25774.id75003.diff
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	Index: head/usr.bin/truncate/truncate.1
	===================================================================
	--- head/usr.bin/truncate/truncate.1
	+++ head/usr.bin/truncate/truncate.1
	@@ -25,7 +25,7 @@
	.\"
	.\" $FreeBSD$
	.\"
	-.Dd December 19, 2006
	+.Dd July 27, 2020
	.Dt TRUNCATE 1
	.Os
	.Sh NAME
	@@ -143,6 +143,43 @@
	.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 ,