我有一个 Debian 的 Raspberry PI。我也在经营Domoticz。Domoticz有时会停止,我必须重新启动服务。我使用此脚本 (domoticz_state_checker.sh(:
#!/bin/bash
echo 'Checking if Domoticz is running.'
DomoticzState=`sudo service domoticz.sh status`
#echo $DomoticzState
if [[ $DomoticzState == *"active (running)"* ]]
then
echo 'Domoticz is running. Nothing to do.'
elif [[ $DomoticzState == *"domoticz is not running ... failed!"* ]]
then
echo 'Domoticz is not running. Restarting Domoticz...'
sudo service domoticz.sh restart
echo 'Domoticz restarted.'
elif [[ $DomoticzState == *"active (exited)"* ]]
then
echo 'Domoticz active (exited). Restarting Domoticz...'
sudo service domoticz.sh restart
echo 'Domoticz restarted.'
elif [[ $DomoticzState == *"inactive (dead)"* ]]
then
echo 'Domoticz inactive (dead). Restarting Domoticz...'
sudo service domoticz.sh restart
echo 'Domoticz restarted.'
fi
当我以用户 Pi 身份运行此脚本时,脚本可以工作。我这样运行它
pi@raspberrypi:~/domoticz/scripts $ /home/pi/domoticz/scripts/domoticz_state_checker.sh
我已经使用 crontab 创建了以下内容 - e 将其作为 cronjob 运行
*/5 * * * * pi /home/pi/domoticz/scripts/domoticz_state_checker.sh >> /home/pi/domoticz/scripts/domoticz_state_checker.log 2>&1
在我的 cron 日志中,我看到正在执行的作业:
Jan 10 14:55:01 raspberrypi CRON[23498]: (pi) CMD (pi /home/pi/domoticz/scripts/domoticz_state_checker.sh >> /home/pi/domoticz/scripts/domoticz_state_checker.log 2>&1)
但是该脚本不会重新启动我的Domoticz服务。检查已完成,但随后我的 if 和 elif 语句出现错误。我在domoticz_state_checker.log中看到以下错误:
Checking if Domoticz is running.
/home/pi/domoticz/scripts/domoticz_state_checker.sh: 7: /home/pi/domoticz/scripts/domoticz_state_checker.sh: [[: not found
/home/pi/domoticz/scripts/domoticz_state_checker.sh: 10: /home/pi/domoticz/scripts/domoticz_state_checker.sh: [[: not found
/home/pi/domoticz/scripts/domoticz_state_checker.sh: 15: /home/pi/domoticz/scripts/domoticz_state_checker.sh: [[: not found
/home/pi/domoticz/scripts/domoticz_state_checker.sh: 20: /home/pi/domoticz/scripts/domoticz_state_checker.sh: [[: not found
当我用suo执行时
pi@raspberrypi:~/domoticz/scripts $ sudo /home/pi/domoticz/scripts/domoticz_state_checker.sh
我得到的结果与通过cron运行脚本时的结果相同
任何想法这里出了什么问题?我的 cronjob 在哪个帐户下执行?
我认为要以特定用户身份在 cronjob 中运行 shell 脚本,您应该在 crontab 中-u
选项。
crontab -u pi -e
在位置文件之前添加命令bash
或/bin/bash
#<timing> <user> <command>
*/5 * * * * bash /home/pi/domoticz/scripts/domoticz_state_checker.sh >> /home/pi/domoticz/scripts/domoticz_state_checker.log 2>&1
您可以从所有用户的后台打印位置文件中找到 crontab
cat /var/spool/cron/crontabs/<user>