Shell for Unix👹
Minishell is the project of the school21. It's a minimum viable version of a real shell. The main goal is to have a good understanding of process creation and synchronisation using the C programmming language.
The only requirements are:
- GNU make (v3.81)
- GCC (v4.2.1)
- Readline (v6.1)
Those versions are the ones used during development.
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Download/Clone this repo
git clone https://github.com/kylr42/minishell -
Install the requirements
curl -fsSL https://rawgit.com/kube/42homebrew/master/install.sh | zsh brew install readline -
cdinto the root directory and runmakecd minishell make
After building the source, run ./minishell from the project root.
Minishell runs executables from an absolute, relative or environment PATH (/bin/ls or ls), including arguments or options. ' and " work the same as bash, except for multiline commands.
You can separate commands with ;, as well as use redirections > >> < and pipes |.
Environment variables are handled, like $HOME, including the return code $?.
Finally, you can use Ctrl-C to interrupt and Ctrl-\ to quit a program, as well as Ctrl-D to throw an EOF, same as in bash.
A few of the functions are "built-in", meaning we don't call the executable, we re-coded them directly. It's the case for echo, pwd, cd, env, export, unset and exit.