Best Open Source Command Shells For Linux

Bash
Bash is an open-source Unix shell and command language. It is written for the GNU Project. It is written by Brian Fox and released in 1989. Bash shell comes by default in Linux. It runs in the text window. It is a command processor that allows the users, type commands that cause actions. Bash's command-line completion system is very flexible and customizable. Command-line completion provides the facility to match partly written program names, file names, and variable names, etc. Bash provides the features of integer calculations, integer arithmetic in any base from two to sixty-four. It provides the features to indexed arrays of unlimited size.

KSH
KSH (KornShell) is an open-source Unix shell. It is developed by David Korn in the early 1980s. It is compatible with the Bourne shell. It consists of a number of features of the C shell. It is written in C language and supported Unix operating systems. It is released under license Eclipse Public License. It has the ability to shorthand names for commands or command lines. It provides the features to store code in memory instead of files. This Linux shell provides the debugging primitives. It provides the facility for programmers to debug their code. It provides the features to control process I/O. It provides the freedom to do two-way communication with concurrent processes.

Tcsh
Tcsh is an open-source compatible version of the Berkeley UNIX C shell (csh). It is used for both an interactive login shell and a shell script command processor. It is written in C language. It is released under the BSD License and supported across platforms. This shell provides a number of commands and provides the features to regulate the flow of control in command files. It provides the features of spelling corrections of filenames, commands, and variables. It has the capability of extending terminal management. They also provide the features of automatic, periodic, and timed events that consist of scheduled events, special aliases, automatic logout, and terminal locking, etc.