Recipe: Functions and arguments

Function definisions
====================

function fname1()
{
	echo hello_func1;
}

fname2()
{
	echo hello_func2;
}

$ fname1;
hello_func1

$ fname2
hello_func2


Function with args
==================
fname()
{
	echo $1, $2; #Accessing arg1 and arg2
	echo "$@"; # Printing all arguments as list at once
	echo "$*"; # Similar to $@, but arguments taken as single entity
	return 0; # Return value
}

$ fname arg1 arg2
arg1, arg2
arg1 arg2
arg1 arg2

Export function as global
=========================
export -f fname

Getting return value for an executed command
============================================
$ cmd 
$ echo $?