Running a script from a script and capturing its output

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

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Re: Running a script from a script and capturing its output by zentara (Cardinal) on Jul 19, 2011 at 16:37 UTC
Read perldoc perlipc. Also see perldoc -q capture. There are several ways. The easiest is backticks. my $return = `path_to_script`; [download] If you want more control, like getting stdout separate from stderr, and the ability to use stdin, then IPC::Open3 or IPC::Run, and many other modules are available. Some programs don't behave well without a real terminal, in those cases you may need to use IO::Pty. The IPC::Open3 (and similar modules), along with the piped-open `my $pid = open( CHILD, " $command \|" ); my $return = <CHILD>;` [download] have the added benefit of giving your the pid of the spawned process, in case you need to manually kill them. I usually use IPC::Open3, see Reading only STDERR for example. I'm not really a human, but I play one on earth. Old Perl Programmer Haiku ................... flash japh	[reply] [d/l] [select]
Re: Running a script from a script and capturing its output by zek152 (Pilgrim) on Jul 19, 2011 at 16:28 UTC
Capture using backticks. `#script to be called print "hello world\n";` [download] #script that does the calling $output = `perl hello.pl`; print "Hello.pl printed\n\t$output"; #OUTPUT #Hello.pl printed # hello world # [download] Hope this helps.	[reply] [d/l] [select]
Re: Running a script from a script and capturing its output by choroba (Cardinal) on Jul 19, 2011 at 16:28 UTC
`my $output = qx{ another_script.pl };`	[reply] [d/l]
Re: Running a script from a script and capturing its output by planetscape (Chancellor) on Jul 19, 2011 at 20:29 UTC
See also: QandASection: programs and processes HTH, planetscape	[reply]