Environment variables script

In this script we will also use [ or test to check if a file exists.

#!/bin/sh
if [ -f try_var.sh ]
then
salutation="Hello"
echo $salutation
echo "The program $0 is now running"
echo "The second parameter is $2"
echo "The first parameter is $1"
echo "The parameter list was $*"
echo "The users home directory is $HOME"
 
echo "Please enter a new greeting"
read salutation
 
echo $salutation
echo "The script is now complete"
fi
exit 0
 
 
$ ./try_var.sh bus khlas
Hello
The program ./try_var.sh is now running
The second parameter is khlas
The first parameter is bus
The parameter list was bus khlas
The users home directory is /home/lexiana
Please enter a new greeting
olaf
olaf
The script is now complete