saving uncommitted changes in /etc prior to emerge run

syslog-ng/._cfg0000_syslog-ng.conf

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+@version: 3.6
+# $Header: /var/cvsroot/gentoo-x86/app-admin/syslog-ng/files/3.6/syslog-ng.conf.gentoo,v 1.1 2014/11/09 08:10:43 mr_bones_ Exp $
+#
+# Syslog-ng default configuration file for Gentoo Linux
+
+# https://bugs.gentoo.org/show_bug.cgi?id=426814
+@include "scl.conf"
+
+options { 
+	threaded(yes);
+	chain_hostnames(no); 
+
+	# The default action of syslog-ng is to log a STATS line
+	# to the file every 10 minutes.  That's pretty ugly after a while.
+	# Change it to every 12 hours so you get a nice daily update of
+	# how many messages syslog-ng missed (0).
+	stats_freq(43200); 
+	# The default action of syslog-ng is to log a MARK line
+	# to the file every 20 minutes.  That's seems high for most
+	# people so turn it down to once an hour.  Set it to zero
+	# if you don't want the functionality at all.
+	mark_freq(3600); 
+};
+
+source src { system(); internal(); };
+
+destination messages { file("/var/log/messages"); };
+
+# By default messages are logged to tty12...
+destination console_all { file("/dev/tty12"); };
+# ...if you intend to use /dev/console for programs like xconsole
+# you can comment out the destination line above that references /dev/tty12
+# and uncomment the line below.
+#destination console_all { file("/dev/console"); };
+
+log { source(src); destination(messages); };
+log { source(src); destination(console_all); };