Work with Variables

Similar to other programming languages, variable in Bash are character string to which we assign a value.

Defining variables

To define a variable use the following syntax

variable_name=variable_value

Be awarded here you can’t put spaces around the assignment operator name = value, because Bash uses spaces as a delimiter to separate command arguments.

Accessing variables

To access the value stored in a variable, prefix its name with the dollar sign ($)

VAR1="Zara Ali"
VAR2=100
 
echo $VAR1
echo $VAR2

Without a dollar sign the Bash will treat some special variable names as a Bash command.

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Bash Bash_scripting INFO1112 Bash_programming Bash_variable