Read console output of a shell script in Perl

Let's say I've got a shell script called print_error.sh looking like this:

#!/usr/bin/bash

echo "ERROR: Bla bla, yada yada."
exit 1

Now I'm in a Perl 开发者_如何转开发script, calling this shell script with

system("print_error.sh")

I now want to read the console output of print_error.sh and write it to a Log4perl logger.

How can I achieve this?

Either use backticks:

my $results = `print_error.sh`;

or see open:

http://perldoc.perl.org/functions/open.html

Here's the solution I've found:

#!/usr/bin/perl

use Log::Log4perl;

my $logfile = "log.txt";
$ENV{"LOGFILE"} = $logfile;

Log::Log4perl->init("log4perl.properties");
$logger = Log::Log4perl->get_logger();

$logger->info("pos 1");
system("./print_error.sh 0 2>&1 >> $logfile") == 0
        or die "perl error";
$logger->info("pos 2");

exit 0

See also here.