Switch to xz compression (instead of bz2) to reduce the size of the huge CommModule logfiles.

CommModule/logclean.sh

@@ -2,6 +2,9 @@
 # logclean.sh - maintenance script for logfiles generated by CommModule
 #               run this daily or weekly from cron
 
+COMPRESS="xz -9 -M 1GiB"	# compression program to use
+COMPRESS_EXT=xz			# file extension for compression program
+
 syslog_error()
 {
 	logger -i -t CommModule/logclean.sh -p user.err $1
@@ -31,12 +34,12 @@ if [ -n "${FILES}" ]
 then
 	for F in ${FILES}
 	do
-		syslog_notice "Compressing ${F}" && bzip2 ${F}
+		syslog_notice "Compressing ${F}" && ${COMPRESS} ${F}
 	done
 fi
 
 # move compressed logfiles to oldlogs directory
-FILES=`find logfile20*.txt.bz2 -print`
+FILES=`find logfile20*.txt.${COMPRESS_EXT} -print`
 if [ -n "${FILES}" ]
 then
 	mkdir -p oldlogs
@@ -47,7 +50,7 @@ then
 fi
 
 # delete old logfiles which have not been modified in at least 2.5+ years
-FILES=`find oldlogs/logfile20*.txt.bz2 -mtime +913 -print`
+FILES=`find oldlogs/logfile20*.txt.${COMPRESS_EXT} -mtime +913 -print`
 if [ -n "${FILES}" ]
 then
 	for F in ${FILES}