Photo by NASA on Unsplash --- If you want to learn bash bash scripting please read this article. Learn complete Linux bash (shell) scripting in one article Operators help us perform various types of operations such as addition, multiplication etc. There are following types of operators present in bash: Arithmetic, Relational, Boolean, File Test, String Test 1. Arithmetic Operators All the arithmetic operators present in bash are discussed below with examples. These operators work with integers.