On Mon, Apr 7, 2008 at 11:26 AM, Kevin Viel <[EMAIL PROTECTED]> wrote:
snip
> The results of phymap my be several lines of text. I would like to process
> these lines in perl
snip
You have several options the qx// operator*, open**, IPC::Open2***,
and IPC::Open3****.
The qx// operator is the easiest way, but you must wait for the
process to finish and it returns the entire output from STDOUT (which
may be large):
my $output_as_a_string = qx/phymap/;
my @output_as_lines = qx/phymap/;
The open function lets you capture the STDOUT of a process as well,
and it allows you to process the lines one at a time:
open my $fh, "-|", "phymap"
or die "could not execute phymap: $!";
while (my $line = <$fh>) {
#do stuff with $line
}
If you need to handle STDIN as well you can use IPC::Open2. If you
also need to manage STDERR you can use IPC::Open3.
* http://perldoc.perl.org/perlop.html#qx/STRING/
** http://perldoc.perl.org/functions/open.html
*** http://perldoc.perl.org/IPC/Open2.html
**** http://perldoc.perl.org/IPC/Open3.html
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
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