linux crontab脚本执行的输出问题

seanking1987

1. test.sh:
   
2. #!/bin/bash
   
3. 
   
4. echo "test std print!"

复制代码

设置crontab执行
* * * * * sh test.sh

并没有指定输出重定向，那么"test std print"会输出到哪里？

扯淡的青春要扯淡对待

如果你能执行？

yjh777

/dev/null

seanking1987

回复 3# yjh777

有相关资料吗？我从测试情况看是这样的。

可以确定的是，如果配置了MAILTO=root,错误输出是会mail给root的

   

yjh777

是的默认发邮件的，-s 发送到系统日志:

CRON(                                                        System Administration                                                        CRON(

NAME
       crond - daemon to execute scheduled commands

SYNOPSIS
       crond [-c | -h | -i | -n | -p | -P | -s | -m<mailcommand>]
       crond -x [ext,sch,proc,pars,load,misc,test,bit]

DESCRIPTION
       Cron is started from /etc/rc.d/init.d or /etc/init.d when classical sysvinit scripts are used. In case systemd is enabled, then unit file is
       installed into /lib/systemd/system/crond.service and daemon is started by systemctl start crond.service  command.  It  returns  immediately,
       thus, there is no need to need to start it with the '&' parameter.

       Cron  searches  /var/spool/cron for crontab files which are named after accounts in /etc/passwd; The found crontabs are loaded into the mem‐
       ory.  Cron also searches for /etc/anacrontab and any files in the /etc/cron.d directory, which have a  different  format  (see  crontab(5)).
       Cron examines all stored crontabs and checks each job to see if it needs to be run in the current minute.  When executing commands, any out‐
       put is mailed to the owner of the crontab (or to the user specified in the MAILTO environment variable in the crontab, if such exists).  Any
       job output can also be sent to syslog by using the -s option.