# 42sh

42sh school project.

Mandatory part:
- Prompt without line edition.
- Builtins `cd`, `echo`, `exit`, `env`, `setenv`, `unsetenv` with there options.
- Executing simple commands with there parameters using `PATH`.
- Support for redirection `>`, `>>`, `<`and `|`.
- Logical operand `&&`and `||`.
- Separator `;`.

Optional feature (five of theses are mandatory to validate the project):
- Inhibitors `"`, `'`and `\`.
- Advanced redirections: aggregation of file output and heredoc `<<`.
- Globbing: `*`, `?`, `[]`, `{}`, etc.
- Backquotes \`.
- Subshell with operand `()`.
- Local variable and builtin `unset` and `export`.
- History with builtin `history`and `!` with options.
- Advanced line edition.
- File descriptors and builtin `read` with options.
- Dynamical autocompletion.

Optional feature highly appreciated:
- Job Control and builtins `job`, `fg`, `bg` and operand `&`.
- Shell Scripting.

## Shell / Subshell

## Line editing

Keys|Functions|
:-:|:--
<kbd>Opt</kbd>+<kbd>C</kbd><br><kbd>Opt</kbd>+<kbd>X</kbd><br><kbd>Opt</kbd>+<kbd>V</kbd>|Copy<br>Cut<br>Paste
<kbd>Opt</kbd>+<kbd><</kbd><br><kbd>Opt</kbd>+<kbd>></kbd>|Move per words.
<kbd>Opt</kbd>+<kbd>^</kbd><br><kbd>Opt</kbd>+<kbd>v</kbd>|Move per line.
<kbd>Ctrl</kbd>+<kbd>L</kbd>|Clear screen.
<kbd>Ctrl</kbd>+<kbd>C</kbd>|Terminate/Kill current foreground process.
<kbd>Ctrl</kbd>+<kbd>Z</kbd>|Suspend/Stop current foreground process.

## History

Keys|Functions|
:-:|:--
<kbd>^</kbd><br><kbd>v</kbd>|Browse the history.
<kbd>Ctrl</kbd>+<kbd>R</kbd>|Research function.
`!!`|Retype the last command.
`!n`|Retype the `n`(numerical value) command from the begin of history.
`!-n`|Retype the `-n`(numerical value) command from the last command.
`!name`|Search for a command beginning with `name`.
`!?name`|Search for a command which contain `name`.

## Autocompletion

Autocompletion works with binary, path and env variable.
Output is colored upon type.
Using arrows to navigate is supported.
Autorefreshing with a new input from the user: modification of the list of possibility.

Commands|Functions|
:-:|:--
`$> l[tab]`|Search for binary.
`$> ls s[tab]`|Search for path/files.
`$> $[tab]`|Search for variables in `env`.

## Globbing

Pattern|Behavior|
:-:|:--
`*`|Everything.
`**`|Match directory and sub-directory.
`?`|Single char.
`[a-z]`|Match range from `a` to `z`.
`[!a-z]` `[^a-z]`|Exclude range from `a` to `z`.
`{ab, ac}`|Match `ab` or `ac`.

## Hash table

Commands|Functions|
:-:|:--
`hash`|List the content of the hash table.
`hash -r`|Clear the memory of the hash table.

## Job Control

Commands|Functions|
:-:|:--
`jobs`|List all the current running jobs.
`fg`|Bring the most recent process to foreground.
`fg n`|Bring the specified jobs to foreground where `n` is the numerical value of the process found in `jobs`.

## scripting