'at' will accept its command in the form of a script sent over STDIN: 
open(AT, "|at now + 2 minutes") or die "...";
print AT "/....../mifuture.cgi idnumber=220\n";
close(AT) or die "...";    # non-zero exit status

[download]
This seems like a very unusual thing to do. CGI scripts are meant to be running under a web server. Why are you scheduling it? Perhaps you want to re-write this as a true scheduled script and set up a cron job for it?

A better solution might be to queue up your requests and send them at intervals, assuming it's the instant batch you're trying to avoid: 

fork && exit;    # CGI script returns/exits right then

# This continues processing in the background
while ($_ = shift(@things_to_do)) {
   sleep $seconds;
   process($_);
}

[download]
I'm curious why you are trying to avoid sending out two mailings at once...? I can't imagine a case where the mail server might have problems with it.

In reply to Re: Unix batch from perl? by Fastolfe
in thread Unix batch from perl? by Anonymous Monk

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