Linux-shell

Introduction

A linux shell implemenet in C++ created as a part of Operating System Laboratory Assignment. This shell is a basic shell that runs as an application program on top of the Linux kernel.

Running the shell

1. Run the command: make. It will ask for the permission to install the libreadline-dev library which is used to keep history and implement various functionalities. You can safely go ahead and install the library.
2. Run the command: ./shell which will run the shell.
3. Type exit or quit to exit the shell
4. Run make clean to remove all the executable files

Functionalities

• Builtin commands: ls [al], echo, cd, quit, etc.
• Piping and redirection
• Interrupt handling for signals like SIGINT and SIGTSTP
• History and up arrow command recall acess
• tab completion for recent commands
• Command line shows username and the present working directory

Limitations

• Support for quoting and escape sequences
• Environment variables
• Aliasing

just to name a few(it is as basic as it gets).....