How to call sub function of a different function from current function in ksh?

Question

In this is the scenario, need to call func1 from Main_Func. How do I call it?

Main_Func() { <code> } Initialize_func() { func1() { <code> } } 

Answer 1

For func1 to be defined, you will first have to have called Initialize_func at least once. Then you may call func1 as just func1.

Example:

outer1 () { echo 'in outer1' inner } outer2 () { echo 'in outer2' inner () { echo 'in inner' } } # First example explained below: outer1 # Second example explained below: outer2 outer1 

Calling outer1 without calling outer2 in this example will not work since inner is not yet defined:

$ ksh93 script.sh in outer1 script.sh[3]: inner: not found [No such file or directory] 

Calling outer2 first and then outer1 works:

$ ksh93 script.sh in outer2 in outer1 in inner 

---

ksh will put your func1 function in the same "scope" as the other functions. It's not as in C++ or other object oriented languages that func1 somehow becomes a sub-function or method in some inner scope of Initialize_func.

This is regardless of whether you use the Bourne shell function syntax as above or define your functions using the function keyword of the Korn shell.