codeshadowing95/simple_shell

Creating my own shell

Simple Shell

A Unix Shell is a command-line interpreter or shell that provides a command line user interface for Unix-like operating systems. The shell is both an interactive command language and a scripting language, and is used by the operating system to control the execution of the system using shell scripts.

Features of the simple shell

• Display a prompt and wait for the user to type a command. A command line always ends with a new line.
• The prompt is displayed again each time a command has been executed.
• The command lines are simple, no semicolons, no pipes, no redirections or any other advanced features.
• The command lines are made only of one word. No arguments will be passed to programs.
• If an executable cannot be found, print an error message and display the prompt again.
• Handle errors.
• You have to handle the “end of file” condition (Ctrl+D)
• Handle command lines with arguments

Compilation

The shell will be compiled this following way:

gcc -Wall -Werror -Wextra -pedantic -std=gnu89 \*.c -o hsh

Usage

The shell should work like in interactive mode

$ ./hsh | /bin/ls | hsh main.c shell.c | ($) | exit

Also in non-interactive mode

$ echo "/bin/ls" | ./hsh hsh main.c shell.c test_ls_2 $ $ cat test_ls_2 /bin/ls /bin/ls $ $ cat test_ls_2 | ./hsh hsh main.c shell.c test_ls_2 hsh main.c shell.c test_ls_2 $

Contributors

• MBOUME NAMEGNI Frank Patrick
• ZUNAÏD Ali