topic Re: How to create Multiple commands from Shell script in Operating System - HP-UX

How to create Multiple commands from Shell script

Tony Williams — Mon, 09 Dec 2002 18:12:32 GMT

I need to create a script for a test that will simulate create multiple processes at the same time. In this case it would be the OpenView opcmsg command. I need to create several dozen opcmsg commands at the same time.

Is there a way inside a shell script to create say 40 opcmsg's at the same time.

Unfortunately all of the looping facilities inside a shell script do not create them fast enough.

Re: How to create Multiple commands from Shell script

Uday_S_Ankolekar — Mon, 09 Dec 2002 18:18:45 GMT

Hello,

#!/bin/ksh
ftp -n << FTP
user
bin
prompt
mput *
FTP

-USA..

Re: How to create Multiple commands from Shell script

Uday_S_Ankolekar — Mon, 09 Dec 2002 18:19:42 GMT

Sorry wrong post..!!

Re: How to create Multiple commands from Shell script

Sridhar Bhaskarla — Mon, 09 Dec 2002 18:22:36 GMT

Hi Tony,

One idea that struck me is to use at command. Use the same shell script but instead of running them together, schedule them all together at the same time.

-Sri

Re: How to create Multiple commands from Shell script

Tom Jackson — Mon, 09 Dec 2002 18:30:06 GMT

When you loop through build a command that looks like this:

opcmsg & opcmsg & opcmsg & ...

I would try to stack 40 of these in one command line. They should execute asynchronous.

Tom

Re: How to create Multiple commands from Shell script

Volker Borowski — Mon, 09 Dec 2002 18:58:31 GMT

Sorry,

I think the expense of creating a new process and switch it to the CPU will always last too long, so you will not be able to "flood" messages with creating processes, that send omne message each.

There has to be a lib and a header file and a documentation and may be with a twentyliner in C you will be able to create a single (or five) process(es) and call the message-call in a loop, which will be fast enough to simulate many messages.

Hope this helps
Volker