[Solved] How to remove a $ character from a variable’s value in Perl? [closed]

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Here is semi-working and working code.

Semi-working

$ cat x1.pl | so
#!/usr/bin/env perl
use strict;
use warnings;

my $a = "$192.168.1.1";
print "$a\n";
$a =~ s/\$//;
print "$a\n";

$ perl x1.pl | so
Use of uninitialized value $192 in concatenation (.) or string at x1.pl line 5.
.168.1.1
.168.1.1
$

Working

$ cat x2.pl | so
#!/usr/bin/env perl
use strict;
use warnings;

my $a="$192.168.1.1";
print "$a\n";
$a =~ s/\$//;
print "$a\n";

$ perl x2.pl | so
$192.168.1.1
192.168.1.1
$

Always use use strict; and use warnings; while you’re learning Perl (the first twenty or so years are the hardest).

If your code is not working still, you need to show the equivalent SSCCE (Short, Self-Contained, Correct Example) code and the example output, but it should most definitely include use strict; and use warnings;.

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solved How to remove a $ character from a variable’s value in Perl? [closed]