linux crontab腳本執(zhí)行的輸出問題

seanking1987

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

復制代碼

設(shè)置crontab執(zhí)行
* * * * * sh test.sh

并沒有指定輸出重定向，那么"test std print"會輸出到哪里？

扯淡的青春要扯淡對待

如果你能執(zhí)行？

yjh777

/dev/null

seanking1987

回復 3# yjh777

有相關(guān)資料嗎？我從測試情況看是這樣的。

可以確定的是，如果配置了MAILTO=root,錯誤輸出是會mail給root的

   

yjh777

是的默認發(fā)郵件的，-s 發(fā)送到系統(tǒng)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.