exec will never return if the command succeeds. Otherwise, it will return and store the error message in $!. You ought to include this in your warn to aid your debugging:

exec('qtar', "-g $path $file -L FULL -R >>$LOGFILE") or warn "Couldn't exec: $!";

If you do need to modify your environment, add and modify keys of the special %ENV hash, like so: 

$ENV{path} .= '/usr/local/myneatprogram/bin';
$ENV{qtar_args} = '-C';

[download]
Those are made-up examples.

In reply to Re: cron and ssh by chromatic
in thread cron and ssh by kelcey

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