A ‘for loop’ is a bash programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement i.e. it is the repetition of a process within a bash script. For example, you can run UNIX command or task 5 times or read and process list of files using a for loop.

How do you write a for loop in Linux?

The basic syntax of a for loop is: for in ;do $;done; The variable name will be the variable you specify in the do section and will contain the item in the loop that you’re on.

What is a for loop best used for?

The for loop is probably the most common and well known type of loop in any programming language. For can be used to iterate through the elements of an array: For can also be used to perform a fixed number of iterations: By default the increment is one.