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…

The nohup command, short for no hang-up is used to run a process in the background. A process that has been ‘nohuped’ will continue to run even if the terminal from which it was run is closed. In effect, nohup…

The cmp command is used to compare two files on Linux and Unix. It is mostly useful for scripts, as it only reports whether the files are different or not. It does not report the differences. Likewise, it can also be…

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…

The split command in Linux lets you split large files into smaller files. The smaller files by default contain 1000 lines each. However, the split command also gives you the option to customize the number of lines and bytes in…

The bc command, short for basic calculator, is a language that supports arbitrary precision numbers with interactive execution of statements. Its syntax is similar to that of C programming language. It has two major applications. One as a mathematical scripting language and…