Moving onto where we require a greater degree of control, we can use the
elif keyword. Unlike
elif requires an additional condition to be tested for each
elif. In this way, we can provide for different circumstances. We can add in as many
elif conditions as required. The following shows a pseudo-code:
if condition; then statement elif condition; then statement else statement fi exit 0
A script may make life easier for the operator by providing a simplified selection for a more complex code. Even though the script becomes gradually more complex to meet the requirements, to the operator the execution is greatly simplified. It is our job to enable users to run more complex operations easily from the command line when creating scripts. Often, this will necessitate the addition of more complexity to our scripts; however, we will be rewarded with the reliability of the scripted application.