Unix Shell - Command Line Interface

#!/bin/ksh

#  $#: command line parameters number, exclude the command itself

#  $0: the command itself

#  $1: the first command parameter

#  $2: the second command parameter

#  $*: all command parameters, exclude the command itself

if [ $# == 0 ]
then
    echo "command parameters is missing. exit"
    exit
fi


# input variable from user command.
echo "read your name:/c"
read NAME
echo "read your name:/c"
read AGE

echo Name=$NAME,Age=$AGE