时钟同步

[root@zabbix-proxy22~]# crontab -l

*/1 * * * * /root/db_alert_webhook/db_alert_webhook_emcc.sh >/dev/null

*/20 * * * * /sbin/ntpdate -u pool.ntp.org > /dev/null 2>&1

1 1 * * * /usr/xbak/xbak.sh

2 2 * * * /usr/xbak/xcleanbak.sh