Starter probe

hello.sh

The source runs uname -a and echo. Its “ready” message is unconditional: it does not test dependencies, privileges, disk space or readiness for another installer.

One-liner

curl -fL 'https://www.helper.sh/hello.sh' -o './hello.sh'

This command downloads the bundled file only; it does not run it. Inspect the saved source and compare its version before deciding whether to execute it.

Check the file you downloaded

Compare a saved file with the exact bytes bundled in this page’s build. The file stays in this tab; this tool does not upload or persist it. Maximum 2 MiB.

Expected SHA-256
36f25a1385e6e94b11ccdf8f96febf24848cfff928bfe51ff0967e2d0620bded

Bundled byte count: 231

Save checksum file

Save the script and checksum in the same directory. On Linux with GNU Coreutils, the command below checks the saved bytes only; it does not run the script. Keep the original filename for this command.

sha256sum --check './hello.sh.sha256'

No comparison yet.

The checksum and script come from the same site, not an independent signature. A match does not prove safety, authenticity of upstream dependencies, or suitability for your host. Mutable remote dependencies need separate review.

Read validation and limitations

Requirements

  • Linux or macOS shell
  • bash
  • curl or wget

Best for

  • Check whether this specific file can be downloaded and reviewed.
  • Compare a minimal script with its expected echo/uname behavior.

Highlights

  • No package, service or configuration changes appear in the bundled source.
  • No arguments or root privileges are required by this source.

Recommended procedure

  1. Download the file and inspect its three output statements.
  2. If you choose to run it locally, compare uname output with the local host.
  3. A fixed success message does not validate any other script.