linux 的计划任务 cron

https://serverfault.com/questions/587696/how-to-restart-php-fpm-from-cron

我也遇到了这个问题，想用cron 来启动php-fpm进程（当检测到php-fpm 进程挂掉的时候）

#!/bin/bash
pid=`ps aux|grep php-fpm|grep -v grep|awk '{print $2}'`
if [[ $pid == '' ]]
then
service php5.6-fpm restart
fi

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把service php5.6-fpm 这句改为     /etc/init.d/php5.6-fpm restart 就是可以的。也是够奇怪的。：）

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I'm trying to restart PHP5-FPM periodically using Cron, but am having no luck.

I can restart manually with no problems, using service php5-fpm restart or /usr/sbin/service php5-fpm restart

However, when I use the same command, including using the full path to /usr/sbin/service, nothing happens. The cronjob does run (as I see from the syslog), but PHP5-FPM does not restart.

The relevant line of my root user's crontab looks as follows:

* * * * * /usr/sbin/service php5-fpm restart

I have confirmed with which service that the path to service is indeed /usr/sbin/service.

Why is this not working?