clean_cvc_log

#! /bin/bash

#clean_cvc_log: removes old CVC log files
# Version 1.0

#   Copyright 2106 D. Mitch Bailey

#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.

#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.

#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

if [[ ${#*} -ne 1 ]] || [[ $1 != [[:digit:]]* ]] ; then
	echo "usage: clean_cvc_log keep_log_count"
	exit 1
fi

backupCount=$1

logList=`ls *log.[1-9]*.gz | sed 's/log.*/log/' | sort -u`

rm -f rm_log_list
for baseLog in $logList; do
	logCount=0
	zgrep -q 'CVC: End:' $baseLog
	baseLogOk=$?
	for logFile in $( ls -t $baseLog.*.gz ); do
		if zgrep -q 'CVC: End:' $logFile; then
			((logCount++))
			baseLogOk=1
			#echo $logFile complete $logCount
		elif [[ $baseLogOk ]] && [[ $logCount -le $backupCount ]]; then
			# incomplete log files removed if older than the most recent complete log
			echo rm -f $logFile ${logFile/log/error} >> rm_log_list
			#echo $logFile incomplete
		fi
		if [[ $logCount -gt $backupCount ]]; then
			# remove log files older than the last log file saved
			echo rm -f $logFile ${logFile/log/error} >> rm_log_list
		fi
	done
done

if [[ -s rm_log_list ]]; then
	cat rm_log_list
	echo
	echo \'source rm_log_list\' to remove files
else
	echo no files to remove
fi

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