Re: [PLUG] Bash I/O redirection

[Matt Mossholder <matt@mossholder.com>]

On Wed, Aug 31, 2011 at 11:33 AM, Julien Vehent <julien@linuxwall.info> wrote:

Hey Guys,

I have this bash script that does an oracle backup (launched via crontab), and I'd like to redirect the output of the script to a file. The classic ways to do it would be:
 * use a wrapper script (that requires an additional script...)
 * call the script with '>' in the cron line (make my cron line ugly)
 * inside the script, put a ">>" after each command (berk !)

My question is: would there be a way to put a global redirection at the beginning of the script ?
something like
 "1 > /tmp/log.txt"
and then have all the subsequent commands go to the log file ?


Thanks,
Julien

Julian,

  ÂYou could try putting blocks of commands inside of parens, which runs them in a subshell, and then just after the parens, put in your redirect.

Example:

#!/bin/bash

(

 Âecho "Hi Julien!"

 Âcat /etc/hosts

 Âecho "Bye Julien!"

) 1> /tmp/myoutput 2>&1

That will take all the stdout and stderr and stuff it into /tmp/myoutput.

  Â--MattÂ

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