Bash shell: 3 examples of how to split strings

Bash split strings

Usually, when dealing with string literals or message flows, we sometimes need to split strings into tokens using delimiters. The delimiter can be a single character or a string containing multiple characters. In this tutorial, we will learn how to split strings using single-character length separators and multi-character length separators in Bash shell scripts.

To split a string in Bash, follow these steps:

• Set IFS to the required delimiter: IFS is an internal variable that determines how Bash recognizes word boundaries.
• The default value of IFS is blank. If you set it to a different value, reset it to the default space.
• Use the option -ra to read a string into a variable.

-r backslash cannot be used as an escape character.

-a ARR Words separated by IFS get a sequential index of the ARR.

• Now split the string into delimiters (set in IFS) stored in the array ARR. ARR is just an array name. Any valid string literal can be used as the array name.
• Now you can use bash to iterate over tokens split into arrays.

It's time to give some examples. In the following three examples, let's go through a Bash script, where IFS is used to split a string.

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