Like other programming languages, bash provides you with the option to ignore a single line, inline, or a block of lines from execution.

In Bash and also for other implementations of the shell, like zsh and fish, you can use the HereDoc to redirect a multi-line or block of lines from the script as an input to interactive commands.

The shell is nothing more than a program that carries the user typed commands or instructions from the terminal to the kernel.

The kernel is the core of the system that bridges the hardware and software layers and smoothly creates interaction between them to transport data.

The ZSH (or Z shell) can be said to be an extended version of the standard Bash shell interpreter, written by Paul Falstad in 1990 while studying at Princeton University.

The UNIX/Linux CD command is popularly used to move into different directories from the current working directory using the command line.

The read command is a built-in Linux utility that allows shell script writers to take single line input from the keyboard or from the file descriptor and store it in a variable.

Fish is a user-friendly UNIX/Linux shell program that focuses on providing most of the known features by default without requiring any manual configuration.

The dir command is a less known tool used to display files and directories in the current directory, identical to the ls command.

In the Linux world, two common commands, “ls” and “dir“, replicate each other so well that most Linux users think one of them is an alias or symbolic link to the other.

The pushd and popd commands are ways to efficiently navigate between different directory paths by stacking them in memory and popping them out when they are required using the index number.

The vdir command is an equivalent to the “ls -l -b” command, printing the content in long list format and showing escape characters on the file or directory name, just like the dir command is equivalent to the “ls -C -b” command.

Korn shell (or KSH) is a UNIX shell (that complies with POSIX 2) developed in the late 1980s by David Korn at Bell Labs, way earlier than Bash shell.

The C shell (or CSH) and Tcsh were the earliest UNIX/Linux shell interpreters in the late 1970s, inspired by the C programming language.

Dash (or the Debian Almquist shell) is a UNIX/Linux shell that complies with the POSIX standard and earned the title of “lightest shell” (10x smaller in size) compared to Bash.

The restricted bash shell (or rbash) is a Linux shell that blocks certain features of the bash shell for both commands and shell scripts executed inside the restricted shell.

The chroot jail is a process of creating a sandbox environment for a user or script with restricted permissions assigned by the jail creator that can come into use for various reasons, followed by

In this article, you will learn to read large files effectively using either the more or less command and find their huge difference.

The chsh is a UNIX/Linux command-line tool to change the existing or specified user login shell into a new login shell.

The mkdir command is used to create single or multiple directories while also setting a permission when they are created in a Linux system.