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Multiples commands between pipes and a single process

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# 1  
Old 10-07-2010
Multiples commands between pipes and a single process
Hi

I have this script:

Code:
#!/bin/ksh
cmd1 | cmd 2 |cmd 3| cmd4

which it creates 4 process....

Is possible to create a single process PID1 which include all commands?

Thanks
Israel
# 2  
Old 10-07-2010
No, what exactly are you trying to achieve?
# 3  
Old 10-07-2010
Mostly no. shell builtins like read and echo will do what you want but in general the shell has to execute external executables in a separate shell

Try this each command is in the same pid.
Code:
echo "hi there $$" | read var && echo "$var $$" | read var && echo "$var $$"

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