To declare a variable, just type the name you want and set its value using the equals sign (=).
Check out this example:
#!/bin/bash name="Mokhtar" age=35 total=16.5 echo $name #prints Mokhtar echo $age #prints 35 echo $total #prints 16.5
As you can see, to print the variable's value, you should use the dollar sign ($) before it.
Note that there are no spaces between the variable name and the equals sign, or between the equals sign and the value.
If you forget and type a space in between, the shell will treat the variable as if it were a command, and, since there is no such command, it will show an error.
All of the following examples are incorrect declarations:
# Don't declare variables like this: name = "Mokhtar" ...
