time=$(date +%H) end_time=`expr $time – 2`a=$end_timeBF_TIME=$(date +%Y%m%d)_$a:00-$time:00cp /usr/local/tomcat8/logs/catalina.out /var/log/tomcat/oldlog/catalina.$BF_TIME.outecho ” ” > /usr/local/tomcat8/logs/catalina.out

catalina.out

mkdir -p /var/log/tomcat/oldlog/

chmod  +x  /root/tom_log.sh

 crontab -e0 */2 * * * sh /root/tom_log.sh

ls /var/log/tomcat/oldlog/

catalina.20190102_15:00-17:00.out  catalina.20190102_17:00-19:00.out

[…]