unix command in perl

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

hello, i know that i can use unix commands in perl using: system() or writing the command between `` and when i running the script, the commands are shown in the terminal window. i wanted to know how can i prevent those command from shown in that window? thank you, sagi

Comment on unix command in perl

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Re: unix command in perl by jettero (Monsignor) on Sep 25, 2007 at 12:20 UTC
my @lines = `ls -al`; shouldn't print anything to the terminal window. ... is the stuff that sneaks through on the stderr pipe? If so you, you can maybe use 2>&1 to deal with it. -Paul	[reply] [d/l]
Re^2: unix command in perl by perlfan (Parson) on Sep 25, 2007 at 13:54 UTC
Yeah, I was thinking that maybe something was sneaking out via STDERR. jettero, post the command you are running and the output that is not getting captured.	[reply]
Re^3: unix command in perl by sagibeli (Novice) on Sep 25, 2007 at 14:13 UTC
my $chk_user=system("ypmatch $user passwd"); where $user is any username. the output i get in case the username doesn't exist: Can't match key sss in map passwd.byname. Reason: No such key in map. and in case the username exists, i get some details about this user. i don't want the results in any case to be shown in the terminal window. thanks	[reply]
Re^4: unix command in perl by liverpole (Monsignor) on Sep 25, 2007 at 14:58 UTC
Re: unix command in perl by graff (Chancellor) on Sep 25, 2007 at 13:21 UTC
Show us some code that demonstrates the problem. Try using an example that would do the same thing on any unix/linux system (that is, don't make it depend on some particular data file in your home directory).	[reply]