What is the purpose of `#!/bin/bash`?

The line #!/bin/bash is known as the shebang. Its purpose is to specify the interpreter that should be used to execute the script. Here’s what it does:

Interpreter Specification: It tells the operating system to use the Bash shell located at /bin/bash to run the script.
Execution Context: When you run the script directly (e.g., ./script.sh), the shebang ensures that the script is executed in the correct environment, allowing the commands within the script to be interpreted properly.
Portability: By including the shebang, you can run the script on different systems without needing to specify the interpreter each time.

Example:

#!/bin/bash
echo "Hello, World!"

In this example, the script will be executed using Bash, ensuring that Bash-specific syntax and features are available.

If you have more questions or need further clarification, feel free to ask!