Introduction

It's a shell implemented in C.

Functionality

• Built-in Commands: ls [al], echo, pwd, cd, quit, history, pinfo, nightswatch, setenv, unsetenv, jobs, kjobs, overkill, fg, bg, cronjob, quit.
• Process management including foreground and background processes and switching between them.
• Piping and redirection.
• Signal handling for signals like SIGINT and SIGTSTP.
• A prompt that shows the username, hostname and the current working directory
• command history.

Make Instructions

In the directory where the source files reside, execute:

$ make
$ ./shell

To clean up object and binary files, execute:

$ rm shell

File structure

.
├── commands
│   ├── bg.c
│   ├── cd.c
│   ├── commands.h
│   ├── echo.c
│   ├── env.c
│   ├── fg.c
│   ├── history.c
│   ├── jobs.c
│   ├── Kjobs.c
│   ├── ls.c
│   ├── nightswatch.c
│   ├── other_commands.c
│   ├── overkill.c
│   ├── pinfo.c
│   ├── Piped.c
│   ├── pwd.c
│   ├── quit.c
│   └── Redirection.c
├── history.txt
├── makefile
├── readme.md
├── shell.c
├── utils.c
└── utils.h