/simple_shell

Primary LanguageC

Simple Shell Peer Project

Team Members

  • Hammed Amusat Oriyomi
  • Oludayo Jeremiah Adedayo

Description

This project is a simple shell program written in C. It provides a command-line interface for users to interact with the operating system. The shell supports basic commands such as cd, exit, and can execute other system commands.

Usage

To compile the shell program, use the following command:

gcc simpleshell.c -o shell

To run the shell in interactive mode, simply execute the compiled binary:

./shell

To run a command directly from the command line, pass it as an argument to the shell binary:

./shell ls -l

Features

  • Supports basic commands: cd, exit
  • Can execute other system commands
  • Supports environment variables: $$, $?, $PATH

Command Syntax

The shell recognizes the following commands:

cd

Change the current working directory.

Syntax:

cd <directory>

Example:

cd /home/user/documents

exit

Exit the shell. Optionally, you can provide an exit status.

Syntax:

exit [<status>]

Example:

exit 0

Environment Variables

The shell supports the following environment variables:

  • $$: PID of the shell process.
  • $?: Exit status of the last command.
  • $PATH: Value of the PATH environment variable.

setenv

Set an environment variable.

Syntax:

setenv <VARIABLE> <VALUE>

Example:

setenv MY_VAR some_value

unsetenv

Unset an environment variable.

Syntax:

unsetenv <VARIABLE>

Example:

unsetenv MY_VAR

echo

Echo the value of an environment variable.

Syntax:

echo $<VARIABLE>

Example:

echo $MY_VAR

Contributing

To contribute to this project, fork the repository, make your changes, and submit a pull request. Please ensure that your code follows the project's coding style and conventions.

Issues

If you encounter any issues or have suggestions for improvement, please open an issue on the GitHub repository.

License

This project is licensed under the MIT License. See the LICENSE file for details.