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

Re^4: Does problem is in the for loop???

by afoken (Canon)
on May 11, 2015 at 10:21 UTC ( #1126293=note: print w/replies, xml ) Need Help??


in reply to Re^3: Does problem is in the for loop???
in thread Does problem is in the for loop???

print OUT if ((s/m/$uut_names[$i]/) && (s/in1/$nets[$i]/) && (s/output/$enabled_nets[$i]/));

there is no output being written to file here

You are missing the while (<IN>) { ... } loop around this statement. print defaults to writing $_ when called without arguments or only a file handle.

Stupid demo:

>perl -E "open IN,'<','/etc/group'; open OUT,'>','/tmp/foo'; while (<I +N>) { print OUT if /adm/; } close OUT; close IN;" >cat /tmp/foo sys:x:3:root,bin,adm adm:x:4:root,adm,daemon disk:x:6:root,adm >

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

Replies are listed 'Best First'.
Re^5: Does problem is in the for loop???
by marto (Cardinal) on May 11, 2015 at 10:24 UTC

    Doh! Indeed I am, thanks for pointing this out. Another occasion where I need to take a step back and properly regulate my caffeine/blood level.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1126293]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (3)
As of 2021-01-17 05:48 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Notices?