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awk vs perl

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# 1  
Old 02-05-2010
awk vs perl
Code:
awk -F "|" '{print $2$3$4 upto $30}' file1 > file2

Same logic, i want to write it in perl

I tried
Code:
#!/bin/usr/perl 
my $line;
open FH, "<file1" or die " Can't open file $!";
open FH1, ">file2" or die "Can't open file ";
while (<FH1>){
    $line = (split /\|/,$_)[1,2,3,4....];
    print FH2 $line;
}
close(FH1);
close(FH2);

It didn't work like awk, what i want..
Please guide me
please tell which one is good in speed and performance in a a large file
Last edited by Franklin52; 02-05-2010 at 03:02 PM.. Reason: Please use code tags!!
# 2  
Old 02-05-2010
in perl it is more simple than your awk & perl codes:-

Code:
perl -nalF'\|' -e '$"="|" ; print "@F[1..29]" ;'  infile.txt

SmilieSmilieSmilie
Last edited by ahmad.diab; 02-05-2010 at 04:42 PM..
# 3  
Old 02-06-2010
Need to understand
could you Please tell how it's work. It's very complex but may be effective. Someone please help me to understand this code
# 4  
Old 02-07-2010
Lightbulb
Quote:
Originally Posted by pritish.sas
could you Please tell how it's work. It's very complex but may be effective. Someone please help me to understand this code
See 'man perlrun', and check out the options -n -a -l -F and -e.

$" is also known by its long name $LIST_SEPARATOR (see 'man perlvar'), which explains a lot I guess ;-)

'[1..29]' is an array slice, and selects all specified elements. '1..29' is a range of all integers between and including 1 and 29.

Hope that helps...
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