Re: Error "Use of uninitialized value $lines[0] in substitution (s///) at " with below Code

[Anonymous Monk]

readdir returns such files as '.' and '..'

opendir my $dir, './var';
say join "\n", readdir $dir;

Output:

fonts.tar.gz
.
c
..

Reading this stuff yields nothing:

open my $file, '<', '.';
my @lines = <$file>;
say join "\n", @lines;
say scalar @lines;

Produces empty line and 0.

Use glob instead...