SmallShell

A minimalistic shell written in C that supports some basic shell features.

Features

• Commands can be run in the background by adding & to the end of the line
• Input/Output redirection using < and >
• $$ expands to the current PID
• Supports PATH based command lookups
• SIGTSTP (Ctrl + z) is used to toggle whether background commands are accepted
• SIGINT (Ctrl + c) is used to kill the current running command. It does not kill SmallShell or background processes
• A line starting with a # is a comment and will be ignored

Built-in Commands

These commands are built in to the shell, all others will run using execvp()

• status returns the previous commands exit code
• cd changes the current working directory
• exit exits the shell

Requirements

• Make
• POSIX-compatible system

Installation

git clone https://github.com/CrazyheadJake/SmallShell.git
make

Usage

./smallsh