Without conditional statements, your script will only follow a fixed process. Intereacting with the user would be almost of no use. Let's see how we can input them!
We have used a conditional statement before (in all scripts, actually):
if [ "$PLAYONLINUX" = "" ] then exit 0 fi
If the condition is true, the code between then and fi will be executed.
The condition is put in square brackets. The code to be executed if the condition is true is put between then and fi.
Note: Do not run this code.
if [ condition ] then code fi