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Substitution with s///

Posted on 2006-04-09
Medium Priority
Last Modified: 2010-03-05
Hi Experts,

 I am using the s/// patern to substitute a source string with a target string.
I am getting the source string and the target string in 2 variables as below.
my $searchpattern = <STDIN>;
my $replacestring = <STDIN>;

I am looping through a file as below and trying to replace sourcepattern with replacestring as below and writing into another file.

foreach (<IN>){

      print OUT $line;

the above is not working when I am using the variables . It works if I replace(given directly the source and target strings) the above syntax as below.

foreach (<IN>){

      print OUT $line;

Please let me know where I am going wrong/ what is the correct way to do that.

Thanks in advance. I need this very urgently.
Question by:nmretd
  • 2
LVL 28

Accepted Solution

FishMonger earned 2000 total points
ID: 16412160
Try this:

chomp(my $searchpattern = <STDIN>);
chomp(my $replacestring = <STDIN>);

foreach (<IN>){

     print OUT $line;
LVL 28

Expert Comment

ID: 16412169
Oops, one more adjustment.  The regex is being applied to $_ but you're printing $line and $line is not being assigned.

foreach (<IN>){

     print OUT;

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