The goal was to create a small version of a Bash. The shell can execute multiple commands, support redirection and piping, manage environment variables, and implement several built-in commands. It also handles specific keyboard signals (ctrl-C, ctrl-D) in interactive mode.
- Prompt Display: The shell displays a prompt while waiting for user input.
- Command History: The shell maintains a history of executed commands.
- Single Quotes (
'): Prevents the shell from interpreting metacharacters within the quoted sequence. - Double Quotes (
"): Prevents the shell from interpreting metacharacters within the quoted sequence, except for the dollar sign ($).
- Input Redirection (
<): Redirects input from a file. - Output Redirection (
>): Redirects output to a file, overwriting the file if it exists. - Append Output Redirection (
>>): Redirects output to a file, appending to the file if it exists. - Heredoc (
<<): Reads input until a line containing the specified delimiter is seen (without updating the history).
- Pipes (
|): Connects the output of one command to the input of the next command in the pipeline.
- Environment Variables (
$): Expands to the value of the variable. - Exit Status (
$?): Expands to the exit status of the most recently executed foreground pipeline.
ctrl-C: Displays a new prompt on a new line.ctrl-D: Exits the shell.
echo: Prints text to the standard output. Supports the-noption to omit the trailing newline.cd: Changes the current directory. Supports relative or absolute paths.pwd: Prints the current working directory.export: Sets environment variables.unset: Unsets environment variables.env: Prints the current environment variables.exit: Exits the shell.
Clone the repository
git clone https://github.com/rngina/minishell.git
Compile the project
make
Run the executable
./minishell