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 using -f
From: Hiroki Sato <hrs@FreeBSD.org>
Date: Wed, 18 Mar 2020 08:00:46 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r359067 - head/share/examples/ipfw
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Author: hrs
Date: Wed Mar 18 08:00:46 2020
New Revision: 359067
URL: https://svnweb.freebsd.org/changeset/base/359067

Log:
  -F is GNU diff specific, not implemented in BSD diff.
  
  Reported by:	kouya@ryuhoku.jp
  MFC after:	3 days

Modified:
  head/share/examples/ipfw/change_rules.sh

Modified: head/share/examples/ipfw/change_rules.sh
==============================================================================
--- head/share/examples/ipfw/change_rules.sh	Wed Mar 18 05:28:36 2020	(r359066)
+++ head/share/examples/ipfw/change_rules.sh	Wed Mar 18 08:00:46 2020	(r359067)
@@ -149,7 +149,7 @@ cat <<!
 The new rules are now installed. The previous rules have been preserved in
 the file ${edit_file}.$DATE
 !
-diff -F "^# .*[A-Za-z]" -u ${edit_file}.$DATE ${edit_file} \
+diff -u ${edit_file}.$DATE ${edit_file} \
     | mail -s "`hostname` Firewall rule change" root
 rm ${TMPFILE}
 exit 0