explain the SCRIPTs

ZAMO · 12-11-2007, 05:46 AM

Hi,
This is just a general question.

Suddenly i got this doubt. In my server, the crontab has a lot of scripts like this one.

30 * * * * /xxx/yyy/example.sh >> /tmp/directory/something.log 2>&1

i understand crond somewhat.
Here every 30 minutes the crond is assigned to run the script, to append the log file.Is it?

My main clueless is
"" 2>&1""

What is this mean? I saw this in lot of crontab files.
Please Explain me as brief as you can.

Thanks in Advance.

unSpawn · 12-11-2007, 06:05 AM

Quote:

Originally Posted by ZAMO

Please Explain me as brief as you can.

Redirect stderr to stdout.

ZAMO · 12-11-2007, 06:31 AM

Thank you
stderr to stdout=standard error to standard output

so , any output or error will be send to standard output. Please give more explanation.
or Give me some link to study the basics.

pwc101 · 12-11-2007, 06:35 AM

http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-3.html