| Baeldung on Linux

>> Inserting a Newline in a Variable in Bash

>> Replacing Whitespaces With Tabs in a File in Linux

>> Return Value of Substitutions With sed and awk

>> Removing the Last Character of a File

>> How to Add Up a Column of Numbers in Bash

>> File Editing: Appending a Non-Existent Line to a File

>> Using sed With a Literal String Instead of an Input File

>> Check if a String Contains a Substring in Linux

>> Splitting a File at Given Line Numbers

>> Difference Between grep, sed, and awk