How to exit program correctly?

tanboonhoe · #1 (**permalink**) 03-05-04, 02:40

I have a small problem here as illustrated below. When the main program (A) call the sub program (B), B program will perform some processing. Inside program B, there is a function to perform some task C. If the conditional check is failed in function C, I will exit with exit 1 and the program will resume with the next command after the function is called. My intention is to return immediately to program A. How can I achieve that?

In program A
{Main
/home/user/program_B
}

In program B
process_C
{
if (condition check)
exit 1
}

Main
#call process_C
process_C

some other processings
<note that it will still continue with above command even process_C return with exit 1>

How can it straight jump to program A once it fails in process_C? Appreciete you help...

Damian Ibbotson · #2 (**permalink**) 03-05-04, 09:53

If I understand what you are saying, exiting WILL pass control back to your calling shell (or program).

Code:

#-----  prog1  ------
echo "Calling prog2 from prog1..."
prog2
echo "Back in prog1"

#-----  prog2  ------

function prog2Func
{
 echo "In prog2Func"
 exit 1
}

echo "In prog2"
prog2Func
echo "You will not see this text!"

If you wanted simply to exit the function but to remain in prog2, use return.

Damian