how do i read input from Unix command

dude01 has asked for the wisdom of the Perl Monks concerning the following question:

i need to run the unix command ud < filename and read the output into my perl script I tried

open (UDPIPE, "(ud < CoreCust.ud)|")
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but it doesn't work

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Re: how do i read input from Unix command by Zaxo (Archbishop) on Aug 30, 2001 at 07:04 UTC
Try backticks: my $output = `ud < CoreCust.ud`;	[reply] [d/l]
Re: how do i read input from Unix command by Hofmator (Curate) on Aug 30, 2001 at 13:21 UTC
To add to Zaxo's answer, you can read the output linewise into an array as well: my @cmd_lines = `ud < CoreCust.ud`; Maybe you have to redirect STDERR, if this is where the command sends its output to. How to do this depends on your shell, on bash you'd write e.g. `ud < CoreCust.ud 2>&1` to redirect STDERR to STDOUT. This should work both with backticks and with your open-pipe solution.	[reply] [d/l] [select]