clear_log.sh

#!/bin/bash

#clear tomcat logs

#log size (1M bytes)，if lt, clear

LOG_FILE_SIZE=1024000 

#define logs location

logs=(/usr/local/tomcat/logs/catalina.out) 

for ff in "${logs[@]}";

do 

#file size

size=0

if [ -f $ff ]

then

#get file size

size=`ls -l $ff |awk '{print $5}'`

fi 

#judge

if [ "$size"0 -gt "$LOG_FILE_SIZE"0 ]

then

echo start clear: "$ff" , size= "$size"

true > $ff

fi 

done 

#finish clear

echo clear logs done!

vi /etc/crontab

HELL=/bin/bash

PATH=/sbin:/bin:/usr/sbin:/usr/bin

MAILTO=root

HOME=/

# run-parts

30 * * * * root /bin/clear_log.sh