How do I run another program from within my Perl program

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vroom has asked for the wisdom of the Perl Monks concerning the following question: ⭐ (programs and processes)

Originally posted as a Categorized Question.

Comment on How do I run another program from within my Perl program

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Re: How do I run another program from within my Perl program⭐ by vroom (His Eminence) on Jan 18, 2000 at 18:56 UTC
use the system function or backticks(`) if you want to collect the output; system "update"; my $datestr=`date`; print "Date output: $datestr\n"; [download]	[reply] [d/l]
Re: How do I run another program from within my Perl program⭐ by Anonymous Monk on Jun 29, 2000 at 17:36 UTC
You can also use exec(), or the `open` or `open2` methods of IPC::Open2, or even `open3` of IPC::Open3 if you want finer control of input and output. `exec` will start the other program, terminating your perl program. `open` lets you either read or write from/to the process. `open2` lets you do both, but isn't very portable. `open3` lets you read from both STDOUT and STDERR, and write to STDIN, but it can get ugly trying to read both outputs. It also has the portability problems of `open2`.	[reply]
Re: How do I run another program from within my Perl program by Anonymous Monk on Mar 28, 2002 at 19:19 UTC
#/usr/bin/perl `blastall -p blastp -d nr -i sa.txt -o sa.out`; One can use the above string also where I am reunning the balst program Originally posted as a Categorized Answer.	[reply]

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