Question

I have found the following script causes a segmentation fault and core in KornShell (ksh) on AIX. Can anyone explain why I get the following results?

Seg Fault

doOutput(){
  Echo "Something"
}

doOutput() >&1

OR

doOutput(){
  Echo "Something"
}

echo `doOutput()`

No Output

doOutput(){
  Echo "Something"
}

doOutput()

Correct

doOutput(){
  Echo "Something"
}

doOutput 

OR

doOutput(){
  Echo "Something"
}

doOutput >&1

Answer 1

Calls to functions in shells such as ksh don’t use parentheses. They are only used during function definition.

Correct:

doOutput(){
  Echo "Something"
}

doOutput

If you call a function with parameters, you separate them using spaces (no parentheses):

doOutput(){
  Echo "$1 and then $2"
}

doOutput go stop

Incorrect:

doOutput(){
  Echo "Something"
}

doOutput()

Plus, why are you redirecting stdout to stdout (>&1)?