Hello all,

In the below script the grep if statement works but the while loop is not printing anything. If I comment the if statement, the while loop works as I would expect it to, that is, printing the content of the file. 



#!/bin/perl

use strict;
use warnings;


my $input_file = 'input.txt';


open(my $in_file,'<',$input_file) or die "Can not open file $input_fil
+e for reading: $!.\n";

if (grep{/Friday/} $in_file) {
    print "Match\n";
} else {
    print "No match\n";
}

print "Before\n";

while (<$in_file>) {
    print;
}

print "After\n";

close($in_file);

[download]


My ultimate gall here is to search for the string 'Friday' in the file 'input.txt', if 'Friday' is missing, add'Friday' to 'input.txt on line 2.



The content of 'input.txt is:
Monday
Sunday

In reply to While loop not printing anything after using grep by skjeiu

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