_____ _   _ _____    ____    _  _____ _____ ____     ___  _____ 
                      |_   _| | | | ____|  / ___|  / \|_   _| ____/ ___|   / _ \|  ___|
                        | | | |_| |  _|   | |  _  / _ \ | | |  _| \___ \  | | | | |_   
                        | | |  _  | |___  | |_| |/ ___ \| | | |___ ___) | | |_| |  _|  
                        |_| |_| |_|_____|  \____/_/   \_\_| |_____|____/   \___/|_|    

                                       ____  _   _ _____ _     _     
                                      / ___|| | | | ____| |   | |    
                                      \___ \| |_| |  _| | |   | |    
                                       ___) |  _  | |___| |___| |___ 
                                      |____/|_| |_|_____|_____|_____|
                                                                      

ASH: The ALX Shell

The gates of shell is a shell program built during the ALX SE program as a final project for the first trimester, it helps student to understand the advanced concepts behind the shell program include process, system call, bit manipulation, file managment, error handling etc...

Getting ASH

In order to install the shell and get benefits of it's features you need to clone the current project, and compile it. The shell should be compiled with gcc-4.8 or new versions of gcc and it adheres to the C90 standard.

Features

Some of the main featurs of this shell includes -

• Displays a prompt and wait for the user to type a command. A command line always ends with a new line.
• If an executable cannot be found, print an error message and display the prompt again.
• Handle errors.
• Handling the “end of file” condition (Ctrl+D)
• Handling the command line with arguments
• Handling the PATH
• Support for the exit features and the exit status
• Handling the Ctrl-C to not terminate the shell
• Handling the command seperator ;
• Handling && and || logical operators
• Handling variable replacements $? and $$
• Handling the comments #
• Supports the history feature
• Supports the file input

Builtins

• The exit builtin exit [STATUS]
• The change directory cd [DIRECTORY] | [OPTION]
• Display the environnment variables env
• Initialize a new environnment variables or created if not match setenv [VARIABLE] [VALUE]
• Remove an environnment variable unsetenv [VARIABLE]
• Support the aliases alias [name [='value'] ...]
• Display help help [BUILTIN]
• Display history history

Authors

Egwuchika Tochukwu - Software Engineer - Linkedin Iyamu Hope Nosa - Software Engineer - Linkedin