Ubuntu 20.04 开机执行自定义脚本

转自https://www.cnblogs.com/Deskew/p/13798595.html

 

#1、切换至root，建立rc-local.service文件

vim  /etc/systemd/system/rc-local.service

 #2、在里面写入如下内容

[Unit] 
Description=/etc/rc.local Compatibility 
ConditionPathExists=/etc/rc.local 

[Service] 
Type=forking 
ExecStart=/etc/rc.local start 
TimeoutSec=0 
StandardOutput=tty 
RemainAfterExit=yes 
SysVStartPriority=99 

[Install]
WantedBy=multi-user.target 

 #3、然后在创建文件rc.local

vim  /etc/rc.local

  #4、里面写入下面内容（就是开机所要执行的脚本） 

#!/bin/sh -e 
## rc.local

# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other 
# value on error. 
# In order to enable or disable this script just change the execution  bits. 
# By default this script does nothing. 

#start script


#end script

echo "added sucessfully!" > /tmp/added_script.log 

exit 0

#5、加上权限

chmod +x /etc/rc.local

 #6、启动服务

systemctl enable rc-local

 #7、开启服务

systemctl start rc-local.service

 #8、查看状态

systemctl status rc-local.service

部分内容如下：（注意active (running)）

#9、重启并检查test.log文件

vim  /tmp/added_script.log 

 #10、如果里面有内容（added sucessfully!），则自启动脚本安装成功。