Can't open /var/run/atd.pid to signal atd. No atd running?

問題 

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Can't open /var/run/atd.pid to signal atd. No atd running?

已解決

[root@cuixuanguo ~]# yum -y install at

[root@cuixuanguo ~]# chkconfig --level 35 atd on

[root@cuixuanguo ~]# service atd start