Shell_SH is a unix shell based on POSIX standards which can be used as command interpreter.

# Shell_SH

Shell_SH, is a Unix shell based on POSIX standards which can be used as a command interpreter.

## Features

The shell comes with all the typical features included inside any shell interpreter , some of them are:

1) Custom colored prompts like bash shell. 
2) Handles all errors gracefully. 
3) Common internal shell commands (Ex: `exit, cd, clear`) are supported. 
3) Can execute binaries available in the path environment variable. 
4) Supports complex pipes commands. 
5) Supports background task using (&) operators.

## Getting Started

Before starting make sure you are running Linux or similar , which can be linux based OS itself , VMware virtual machine or WSL.

Clone the project repository

```bash
git clone https://github.com/himanshu12345yadav/shell_sh.git
cd shell_sh
```

To get started with Shell_SH, you need to install the necessary build tools. The build tools include necessary libraries , build tools , compilers etc to build the project. 

You can do this by running the following command:

```bash
apt install build-essential
```

Once you have installed the build tools, you can start the build process by running the following command which starts the `make` build tool and generate a executable binary in the same directory.

```bash
make
```

After the build process has completed, you can run the Shell_SH executable by entering the following command:

> Note: If the file is not executable you can try

```bash
chmod u+x ./shell.out
```
Then run the file you will eventually enter in SHELL_SH shell.

```bash
./shell.out
```

To exit the shell, and move to your previous shell you can use the `exit` command or terminate the shell process using `Ctrl+C` *(Terminate Signal)*.

## Usage

Shell_SH can be used as a command interpreter to execute various Unix commands. For example, you can use the `ls` command to list files and directories in the current working directory:
 
```bash
ls -lah
```

-	You can also use Shell_SH to execute shell scripts. `For example`, if you have a shell script named `my_script.sh`, you can execute it using the following command`.

```bash
./my_script.sh
```

-	You can also execute all the binary presents in the path variable and use the pipe for interprocess communication.

```bash
curl -X GET https://www.google.com --head | sed 's/server/Google-Server/' | grep Google-Server
```

-	You can use the background (&) operator to push the process in background 

```bash
ping -c 5 google.com &
```

To check the process running in background.

```bash
htop
```

## License

This software is licensed under the [MIT License](https://opensource.org/licenses/MIT).