编写一个无线循环的脚本, 并且将输出写入到/var/log/helloworld.log文件中.
[[email protected] ~]# mkdir /home/zhengtong/20151109/ [[email protected] ~]# cd /home/zhengtong/20151109/ [[email protected] 20151109]# vim helloworld.sh #!/bin/bash # __author__ = ‘zhengtong‘ while [ : ] do echo $(date "+%Y-%m-%d %H:%M:%S") ‘hello world!‘ >> /var/log/helloworld.log 2>&1 sleep 1 done [[email protected] 20151109]# chmod +x helloworld.sh
编写一个系统服务文件
[[email protected] 20151109]# vim /usr/lib/systemd/system/helloworld.service [Unit] Description=helloworld service After=network.target remote-fs.target nss-lookup.target [Service] Type=simple ExecStart=/home/zhengtong/20151109/helloworld.sh ExecStop=/bin/kill -9 $MAINPID [Install] WantedBy=multi-user.target
设置成为开机自启动服务
[[email protected] 20151109]# systemctl enable helloworld
启动helloworld服务
[[email protected] 20151109]# systemctl enable helloworld
观察日志信息
[[email protected] 20151109]# tail -f /var/log/helloworld.log 2015-11-09 04:01:09 hello world! 2015-11-09 04:01:10 hello world! 2015-11-09 04:01:11 hello world! 2015-11-09 04:01:12 hello world! 2015-11-09 04:01:13 hello world! 2015-11-09 04:01:14 hello world!
停止helloworld服务
[[email protected] 20151109]# systemctl stop helloworld
查看报错信息:
[[email protected] 20151109]# systemctl status helloworld
报错信息:
main process exited, code=exited, status=2/INVALIDARGUMENT 表示ExecStart写的不正确. [emerg] 254#0: open() "xxx" failed (13: Permission denied) 表示文件没有运行权限.(chmod +x 程序文件名)
时间： 2024-08-25 11:27:51