Executing System Program

Greetings, I have the following task:

I have to run a Perl script to run spawn multiple processes on a Linux server. The issue is that
each process is huge and may take a while to run.

I simply want my program to run, then start process 1 and let it run in the background, then
immediately start process 2 etc.

Example: let's say I want to tar several directories, and each is 5 GB in size. I would like
program to run and spawn separate tar processes for each and NOT sit there and wait for each one
to finish before it goes to the next.

I have tried system, but it runs and waits and returns the output to the screen. Exec sits there
and waits too.

Right now I run through a loop and on each iteration I do:

    #Either this:
    my @args = ("tar -cvf $File"); #example
    system(@args) == 0 or die "system @args failed: $?";

    #Or This:
    my @args = ("tar -cvf $File > log.txt");
    exec @args or print STDERR "Couldn't exec: $!";

Either one sits there and waits until it's done.

Any ideas?




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