vi /etc/rc.d/rc.local   在末尾追加  sh脚本 sh脚本要提前赋予执行权限  下面是测试，开机同步北京时间

[root@commonTest bin]# vi /usr/local/bin/data.sh #!bin/bashntpdate ntp1.aliyun.com[root@commonTest bin]# chmod 755 data.sh[root@commonTest bin]# vim /etc/rc.d/rc.local #!/bin/bash# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES## It is highly advisable to create own systemd services or udev rules# to run scripts during boot instead of using this file.## In contrast to previous versions due to parallel execution during boot# this script will NOT be run after all other services.## Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure# that this script will be executed during boot.touch /var/lock/subsys/local/usr/local/bin/date.sh