The expr command in Linux – Evaluate Expressions and Perform String Operations

The expr command in Linux evaluates a given expression for you and displays the output. It also lets you perform certain string operations such as finding length, substring and more. In this tutorial, we will learn how to perform these operations. First, we will look at the arithmetic operations and then move on to the …

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The install command in Linux – Copy files, Create Directories, Change User permissions and File ownerships

The install command in Linux copies files and sets file attributes. It is not to be used for installing packages. For installing packages on to your Linux system you should use apt command or yum command. In this tutorial, we will learn how to use the install command for copying files and changing file attributes. …

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