Run the command in a pipe. Something like this:
open (my $in, '-|', 'gzip -dc compressed_file.gz') ||
      die "Can't run gzip: $!";

while (<$in>) {
  # Process the line of output

}
close $in;

[download]
The use of gzip is only an example.

In reply to Re: running shell commands from within perl by cdarke
in thread running shell commands from within perl by pablo78

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