perlcommand-linebackticks

How to capture both STDOUT and STDERR in two different variables using Backticks in Perl

Let's say I want to run an external program from my script with backticks and at the same time I want to capture both STDOUT and STDERR but in two different variables. How can I do that? For istance if I run this script...

my $cmd = `snmpwalk -v $version -c $community $hostname $oid`;

...if there is no error everything works just fine BUT if the command raise an error this error will be printed on the command line and I don't want that to happen. I want to capture the error as well. Nothing has to be printed on the screen. Any ideas?

Solution

  • In the Perl FAQ you have different options depending how do you want to proceed:

    http://perldoc.perl.org/perlfaq8.html#How-can-I-capture-STDERR-from-an-external-command%3f