I'm not sure what you mean. As soon as the SIG{INT} handler is installed and I press CTRL-C while your program sleeps I can see the output of the sig handler ('Delete') and the output of the DESTROY method ('In DESTROY()').

To your second question:

#!/usr/bin/env perl
use strict;
use warnings;
use 5.010;

$SIG{INT} = sub { say "Caught a signal"; exit 1; };

say "Program started";
say "Starting to sleep";
sleep 3;
say "I've been sleeping long enough";

END {
    say "I'm in the END block";
}
[download]

This code should give you confidence. In my case (Linux) the END block is executed.

I'm not sure whether you mix up the creation of a temp directory and temp file. You can create a temp file in your pwd and unlink it with:

my ($fh, $filename) = tempfile($template, DIR => '.');
unlink $filename;
[download]

As long as $fh is open you will have a file to write to and read from.

Have a look at:

#!/usr/bin/env perl
use strict;
use warnings;
use 5.010;

use Cwd ();
use Fcntl ();
use File::Temp qw(tempfile);


my $pwd = Cwd::getcwd;
say "pwd: $pwd";

my $template = 'somthing.XXXXXXX';
my $dir = '.';
my ($fh, $filename) = tempfile($template, DIR => $dir);
say "filename: $filename";
system("ls -l '$filename'");
unlink $filename;
system("ls -l '$filename'");
say "Now store 'Put some text in' in the file";
print $fh "Put some text in\n";
say "Written to file, try to read";
seek $fh, Fcntl::SEEK_SET, 0;
while(my $line = <$fh>) {
    print "Found in file: $line";
}
close $fh;
say "End of prog";
[download]

McA

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