Running multiple processes in Linux

abcabc1103 · #1 (**permalink**) 07-09-2007

Hi guys,

I want to run the multiple scripts at the same time using a ksh script.

For example, I have three scripts to run:
a.ksh, b.ksh and c.ksh

How to start the above 3 scripts simultaneously and then on the completion of the above scripts I have other tasks to schedule.

Thanks
Gary

jim mcnamara · #2 (**permalink**) 07-09-2007

Code:

a.ksh &
b.ksh &
c.ksh &
wait

This will work as long as the scripts do not write to the terminal.

porter · #3 (**permalink**) 07-09-2007

Quote:

Originally Posted by jim mcnamara

Code:

a.ksh &
b.ksh &
c.ksh &
wait

This will work as long as the scripts do not write to the terminal.

I would argue that it will work as long as they all don't want to read from terminal.

robinbannis · #4 (**permalink**) 03-24-2009

Hi,

I am doing a "rsync" to another machine and the arguments that i pass is shown below.

1. $HOME/Robin.ksh us
2. $HOME/Robin.ksh uk
3. $HOME/Robin.ksh in

How can i run all the three at the same time. Cant use "&" in this case.

Basically need to execute this at different shells.
Need to sync everything at the same time.

Regards,
Robin

pludi · #5 (**permalink**) 03-24-2009

Why not?

Code:

pl@desktop:~/testbed> cat test1.sh
#!/usr/bin/ksh
sleep 10
echo $1
pl@desktop:~/testbed> ./test1.sh ab
ab
pl@desktop:~/testbed> ./test1.sh cd
cd
pl@desktop:~/testbed> ./test1.sh ef
ef
pl@desktop:~/testbed> cat test2.sh
#!/usr/bin/ksh
./test1.sh ab &
./test1.sh cd &
./test1.sh ef &
wait
echo "All done"
pl@desktop:~/testbed> ./test2.sh
ab
ef
cd
All done
pl@desktop:~/testbed>

robinbannis · #6 (**permalink**) 03-24-2009

Thanks for you answer bro.

but
Can we give it with out SLEEP?
starting everything at the same time?

pludi · #7 (**permalink**) 03-24-2009

Of course. The sleep was in there for demonstration purpose only, since such a short script would finish before the next would be started. In order to demonstrate parallel execution properly, I had to delay them a bit.

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