This is because in shell scripts, variables are treated depending on context and not segregated by type. Notice that the integer 10 inside the array was treated the same as the strings. #The result is a string that consists of all the elements concatenated into a single string #for loop to append a group of strings to the variable c. #read input strings and store them in a and b We will concatenate multiple variables using the += operator in a for loop, where every two strings are separated by a space. #Read inputs a and b and store string variables in them. ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.Got any questions with how the above examples worked, or something just not working right? Feel free to leave any of it in the comment section below. You can find various more ways to interact with variables inside of Bash's documentation on variable expansion. These are only some of the ways you can use variables inside of Bash. The example below will print wIDEname: variable='WIDEname'Īnd this one will print widename: variable='WIDEname' Similarly, you can print variables in lowercases as well.

The example below prints Name instead of name: variable='name'īut this one prints NAME: variable='name' To begin pulling the other values, let's start with getting familiar with the following: echo 'Hello $) will cause the entire string to be modified. To access the other values, you'll need to use a different syntax for variables. If you run echo $name, you'll see that it prints the first value, Linux Handbook. How do you go about accessing each value though? The above example assigns both Linux Handbook and It's FOSS as the values for the name variable.

Using arraysĮxcluding the above example, the most common type of variable you'll find in Bash is arrays: name=('Linux Handbook' 'It's FOSS') Let me show you these unusual and advanced usage of variables in bash scripting. Outside of the example above, there's also a surprisingly large amount of things you can do with variables, such as filling in a default value when the variable isn't set, and assigning multiple values to a single variable. name='Linux Handbook'Īnd it will print 'Hello Linux Handbook!'. Like other programming and scripting languages, you use variables to store the data and then reference them later in future commands. You probably are aware of variables in Bash shell scripting.

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