#ShellScript: How to write #functions? | Nested functions

A #simple example which demonstrates #shell #script with #functions.

Functions :
Functions make #scripts easier to maintain. Basically, it breaks up the program into smaller pieces. A function performs an action defined by you, and it can return a value if you wish.

src code:
#!/bin/sh

# 1.
# function function_name () {
# commands;
# }

# 2.
# function_name () {
# commands;
# }

# Example to demonstrate functions within a shell script.

fun3 () {
echo "This is fun3().";
}

fun2 () {
echo "This is fun2().";
fun3;
}

function main () {
echo "This is main()";
fun2;
echo "End of main()";
}

main;
exit 0;