Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Re: A simple backticks question

by BrowserUk (Pope)
on Mar 17, 2014 at 16:27 UTC ( #1078620=note: print w/replies, xml ) Need Help??


in reply to A simple backticks question

The for loop iterates a (potentially huge) list returned by the backticks.

If you want to avoid creating that list, you can use open thusly:

open CMD, '-|', 'ls -l' or die $!; while( my $fname = <CMD> ) { chomp $fname; #process the file names one at a time } close CMD;

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1078620]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (4)
As of 2017-11-19 05:27 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In order to be able to say "I know Perl", you must have:













    Results (278 votes). Check out past polls.

    Notices?