executing three processes from three shells

[subash707]

Hi everyone,

I have a problem. I have written a perl program which tries to run three processes in the system. I want the three processes to run in separate shells so that one can use the output of the other. But when I run my program, the first process runs and goes on running and the other two processes never run. My perl script is:

#!/usr/bin/perl -w

system("java net.tinyos.sf.SerialForwarder -comm network\@127.0.0.1:23");

system("java net.tinyos.oscope.oscilloscope");

system("java avrora.Main Blink.od");

When these processes are run differently in different shells one after the other, they work perfectly fine. But when I try to run them froma single perl program, the first one goes on running and the other two never get chance to run.

Can anyone tell me how I can run these three processes on three different shells from withing a single perl script?

Thank you so much,
Subash

 

[KevinADC]

you probably want to look at using fork() instead of system().

 

[tchatzi]

I wonder what different shell has to do with a process that runs at the background the same time as someothers.

Anyway try this

#!/usr/bin/perl -w

system("java net.tinyos.sf.SerialForwarder -comm network\@127.0.0.1:23 &");

system("java net.tinyos.oscope.oscilloscope &");

system("java avrora.Main Blink.od &");

exit 0;

``The wise man doesn't give the right answers,
he poses the right questions.''
TIMTOWTDI

 

[MikeLacey]

Could these programs use the output of the others in this way?

prog1 | prog2 | prog3

Mike

I am not inscrutable.

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