shebanger is a powerful and intriguing command-line interface (CLI) tool designed to transform ordinary shell scripts into a series of exciting shebang lines! This unique utility allows you to take any shell script as input and outputs a corresponding set of shell scripts that are solely composed of shebang lines. What’s remarkable is that executing the first output script seamlessly runs your original shell program.

Key Features

• Transformative Output: Each output shell script consists only of a shebang line, which conceals the intricacies of your original script.
• Base-64 Encoding: The content of the input script is split into 50-byte chunks, encoded in base-64, and elegantly inserted into the shebang lines of the output scripts.
• Execution: By executing the generated scripts sequentially, shebanger reconstructs and runs your original script in a streamlined manner.

Usage Example

To use shebanger, ensure it’s available on your PATH. Here’s a quick demonstration:

1. Consider a sample shell script:

   #!/usr/bin/env bash
   echo "arguments to this script: $@"
   

2. Run shebanger on the script:

   $ shebanger ./test.sh
   

3. This command generates several single-line scripts:

   $ ls test.sh.shebanged*
   

4. Each generated script can be executed to bring back the original functionality:

   $ ./test.sh.shebanged hello this is an argument
   arguments to this script: hello this is an argument
   

Limitations

Currently, shebanger has some limitations regarding the size of scripts it can handle due to the environment variable constraints. Long scripts, particularly those exceeding a few hundred kilobytes, may not execute as intended.

Inspiration

shebanger draws inspiration from bangscript, envisioned as a tool to embed scripts in shebang lines. This concept sparked the creation of shebanger, enhancing the utility of original script content.

Whether you’re a shell script aficionado or simply exploring the boundaries of scripting capabilities, shebanger offers an innovative twist to how you execute your commands—making it not just functional but fun!