[SOLVED] Assigning Output of a Command to an Array in Perl
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A string which is (possibly) interpolated and then executed as a system command with /bin/sh or its equivalent. Shell wildcards, pipes, and redirections will be honored. The collected standard output of the command is returned; standard error is unaffected. In scalar context, it comes back as a single (potentially multi-line) string, or undef if the command failed. In list context, returns a list of lines (however you've defined lines with $/ or $INPUT_RECORD_SEPARATOR), or an empty list if the command failed.
Because backticks do not affect standard error, use shell file descriptor syntax (assuming the shell supports this) if you care to address this. To capture a command's STDERR and STDOUT together:
1. $output = `cmd 2>&1`;
To capture a command's STDOUT but discard its STDERR:
1. $output = `cmd 2>/dev/null`;
To capture a command's STDERR but discard its STDOUT (ordering is important here):
1. $output = `cmd 2>&1 1>/dev/null`;
For those who didn't scroll:
The collected standard output of the command is returned; standard error is unaffected. In scalar context, it comes back as a single (potentially multi-line) string, or undef if the command failed. In list context, returns a list of lines
Last edited by Sergei Steshenko; 11-27-2010 at 05:46 PM.