Disable the mail alert by crontab command

Q. How do I to disable the
[url=javascript:;]mail[/url]
alert send by
[url=javascript:;]crontab[/url]
? When my job is executed and the jobs cannot run normally it will sent an email to
[url=javascript:;]root[/url]
. Why do I receive e-mails to my root account from cron? How can I prevent this?
A. crontab command is use to maintain crontab files for individual users.
By
default the output of a command or a script (if any produced), will be
email to your local email account. To stop receiving email output from
crontab you need to append following string:
Cron Job Prevent the sending of errors and output
To
prevent the sending of errors and output, add any one of the following
at the end of the line for each cron job to redirect output to
/dev/null.
>/dev/null 2>&1.
OR
&> /dev/null
Cron Job Example
Edit/Open your cron jobs, enter:
$ crontab -e
Append string >/dev/null 2>&1 to stop mail alert:
0 1 5 10 * /path/to/script.sh >/dev/null 2>&1
OR
0 1 5 10 * /path/to/script.sh &> /dev/null
Save and close the file. Restart the crond:
# /etc/init.d/crond restart
EMAILTO variable
As pointed out by Anand Sharma, you can set
[url=javascript:;]MAILTO[/url]
=”" variable at the start of your crontab file. This will also disable email. Edit/Open your cron jobs
$ crontab -e
At the top of the file, enter:
EMAILTO=""
Save and close the file.
               
               
               

本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/4206/showart_501171.html

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