simple perl script that does not print

Fred27377 · 08-16-2020, 02:22 PM

I have this script below.It runs and when you execute $? it returns from BASH no errors but it will not print. This sounds limited but i have seen similiar errors before and maybe if you can clear one you can start to clear them all. Just thinking. Thanks for looking and considering.

Code:

#!/usr/bin/perl -d
#use warnings;
#use strict;

my $list = 0;
my $i = 1;
my $a = 0;
if (my $i < 10){


print my $i;
fi

}

tofino_surfer · 08-16-2020, 02:45 PM

You are overusing the keyword my. This should only be used when first declaring a variable. Also there is no fi in perl.

Code:

#!/usr/bin/perl -d
#use warnings;
#use strict;

my $list = 0;
my $i = 1;
my $a = 0;

if ($i < 10){

     print $i;

}

Every time you entered "my $i" you were declaring a new variable $i.

TB0ne · 08-16-2020, 07:38 PM

Quote:

Originally Posted by Fred27377

I have this script below.It runs and when you execute $? it returns from BASH no errors but it will not print. This sounds limited but i have seen similiar errors before and maybe if you can clear one you can start to clear them all. Just thinking. Thanks for looking and considering.

Code:

#!/usr/bin/perl -d
#use warnings;
#use strict;

my $list = 0;
my $i = 1;
my $a = 0;
if (my $i < 10){

print my $i;
fi
}

Didn't you say you wrote a perl script in another thread??
https://www.linuxquestions.org/quest...ml#post6156074

Yet you can't do a simple counter in THIS thread??? Again, as with your other threads, there is AMPLE documentation and sample scripts for you to look at. Have you actually looked at any of them??

pan64 · 08-17-2020, 05:46 AM

you must not comment out those

Code:

use warnings;
use strict;

lines and you will see your code is incorrect.
(commenting out these lines will not solve anything, just suppress the error messages).
also you can try this: http://perlcritic.com/critique/file