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docs/.Bash-Scripting/002-bash-structure.md

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+# Bash Structure
+
+Let's start by creating a new file with a `.sh` extension. As an example, we could create a file called `devdojo.sh`.
+
+To create that file, you can use the `touch` command:
+
+```bash
+touch devdojo.sh
+```
+
+Or you can use your text editor instead:
+
+```bash
+nano devdojo.sh
+```
+
+In order to execute/run a bash script file with the bash shell interpreter, the first line of a script file must indicate the absolute path to the bash executable:
+
+```bash
+#!/bin/bash
+```
+
+This is also called a [Shebang](https://en.wikipedia.org/wiki/Shebang_(Unix)).
+
+All that the shebang does is to instruct the operating system to run the script with the `/bin/bash` executable. 
+
+However, bash is not always in `/bin/bash` directory, particularly on non-Linux systems or due to installation as an optional package. Thus, you may want to use:
+
+```bash
+#!/usr/bin/env bash
+```
+It searches for bash executable in directories, listed in PATH environmental variable.