开机要启动的脚本qidong.sh

[root@c69-01 scripts]# vim /server/scripts/qidong.sh

[root@c69-01 scripts]# cat /server/scripts/qidong.sh
#!/bin/bash
/bin/echo $(/bin/date +%F_%T) >> /tmp/qidong.log

方法一：修改/etc/rc.local

/etc/rc.local，该文件为链接文件

[root@c69-01 ~]# ll /etc/rc.local 
lrwxrwxrwx. 1 root root 13 Feb  5 10:03 /etc/rc.local -> rc.d/rc.local

修改/etc/rc.local文件

[root@c69-01 scripts]# tail -n 1 /etc/rc.local 
/bin/bash /server/scripts/qidong.sh >/dev/null 2>/dev/null

重启系统，查看结果
[root@c69-01 ~]# cat /tmp/qidong.log 
2018-02-19_23:30:56
已开机自启动该脚本

方法二：chkconfig管理

删除掉方法一的配置

[root@c69-01 ~]# vim /etc/init.d/test 
#!/bin/bash
# chkconfig: 3 88 88
/bin/bash /server/scripts/qidong.sh >/dev/null 2>/dev/null

[root@c69-01 ~]# chmod +x /etc/init.d/test

添加到chkconfig，开机自启动

[root@c69-01 ~]# chkconfig --add test

[root@c69-01 ~]# chkconfig --list test
test               0:off    1:off    2:off    3:on    4:off    5:off    6:off

重启系统，查看结果
[root@c69-01 ~]# cat /tmp/qidong.log 
2018-02-19_23:30:56
2018-02-19_23:59:10
操作成功

关闭开机启动

[root@c69-01 ~]# chkconfig test off
[root@c69-01 ~]# chkconfig --list test
test               0:off    1:off    2:off    3:off    4:off    5:off    6:off

从chkconfig管理中删除test

[root@c69-01 ~]# chkconfig --list test
test               0:off    1:off    2:off    3:off    4:off    5:off    6:off

[root@c69-01 ~]# chkconfig --del test

[root@c69-01 ~]# chkconfig --list test
service test supports chkconfig, but is not referenced in any runlevel (run 'chkconfig --add test')