shell 四

#!/bin/bash
#sh4.sh
ladd="/var/log/syslog"
t1="tlog"
t2="tlogs"
tmp="tlog-tmp"
mydate=`date +%d%m`
bak="log-bak"_$mydate
fcp(){
	echo `tail -10 $t1 >$tmp`
	while read line1
	do
		case $line1 in
		\#*);;
		*)echo "$line1" >>$bak
		;;
	esac
	done < $tmp	
	echo "日志文件已经备份到`pwd`/$bak文件中"
	echo `chmod 400 $bak`
	echo "文件权限已经修改"
	echo `rm tlog*`
	echo "删除临时文件，退出系统"
	
}

findfilesize(){
	echo "Welcome to Syslog System"
	echo `cp $ladd ./$t1`
	#t1=`du -k $log_t|cut -d ' ' -f 1 `
	echo `wc -c $t1 | awk '$1>16384'> $t2`
	echo `test -s $t2`
	cho=$?
	if [ $cho -eq 0 ]
		then
			echo "日志文件超过4块"
			fcp
		else
			echo "日志文件不足4块"
		fi
}

findfilesize