This project involves building a custom shell in C. The shell supports basic system commands, custom commands, and handles both foreground and background processes.
README.md- This file.makefile- Used to compile the project and generate the executablea.out.main.c- The entry point for the shell.shell_utils.c- Contains utility functions for the shell.commands.c- Implements custom commands likehop,reveal,log, etc.process.c- Handles process management (foreground/background).
- Shell Prompt: Displays
<Username@SystemName:~>and updates with directory changes. - Input Handling: Supports multiple commands separated by
;or&, handles spaces and tabs. - Custom Commands:
hop: Change directories, support~,.,-and...reveal: List files and directories with flags-aand-l.log: Track command history, execute commands from history.proclore: Display process information.seek: Search for files or directories.
- Process Management:
- Foreground: Waits for process completion, logs time if > 2s.
- Background: Executes without blocking the shell, notifies upon completion.
- The command length will have a length of less that 4096 characters.
- The maximum number of aliases that can be stored is 256 and its maximum size is 256.
- Few assumptions being made during the definition of the shrc file is that any comment starts in a new line, there is no excessive spacing during the definition of aliases and functions
- Aliases follow the following format of definition
alias al = commandcorrect upto the spacing. - Paths/names do not contain whitespace.
- Background process handling is not required for custom commands.
- Piping and redirection are supported for both user and system commands.
Run make to compile the project. This will generate an executable named shell.
Start the shell by running shell.
- Errors do not crash the shell.
https://chatgpt.com/share/fb63b982-92d6-4027-9a88-aaac772038ec