I still do net get it. If the file contains the line 
a.pl 30
b.pl 35

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does it mean that in 30 secs, the script a.pl should be run? And after the 30 secs, another run of a.pl should be scheduled based on the file (which might have changed in the meantime, hence "dynamic")? But you do not want to start a new b.pl that is scheduled to happen in 5 seconds - but what if there is a new line in the file saying 
c.pl 15

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Please, be much more specific.

In reply to Re: Help with Perl by choroba
in thread Help with Perl by ashok.g

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