Shell Programming and Scripting

Hi,
As per shell docs because commands in pipelines are run as separate processes,
variables set in a pipeline have no effect on the parent shell

In the sample below I am unable to set variable in Proc1 so that I can see it in the main program

Is there any work around ?

Thanks
Zam

#!/bin/ksh
Proc1()
{
echo $MYVAR in Proc1
MYVAR=TRUE
echo line1
echo line2
}
### main body ###
export MYVAR=FALSE
Proc1|
while read line;do
echo $line
echo $MYVAR
done

Use temporarary files instead of pipes.

I guess if I have no alternatives I will
Thank you

Perhaps you could set the variable in the loop...

Code:

Proc1()
{
echo line1
echo line2
}
Proc2()
{
MYVAR=TRUE
}
### main body ###
export MYVAR=FALSE
Proc1|\
while read line;do
  Proc2
  echo $line
  echo $MYVAR
done

Thank you Ygor. I have just done it a 5 min ago . I don't know why I didn't thought of it earlier --- tunnel vision I guess.