[Linux] Tip for assuring download file

In some projects, they give tutorials about how to download and install.

Some of them also provide with checksum (such as the following)

The SHA-1 checksum for repo is e1fd3bef059d152edf4d0522590725d317bc637f

you can easily verify the checksum by various sum binaries such as md5sum, sha1sum, etc

$ sha1sum bin/repo

e1fd3bef059d152edf4d0522590725d317bc637f bin/repo

it is useful in the sense that the downloaded file is not corrupted but also useful to find out that the downloaded file is right on track on without any further update on the project since fast evolving project, there could be un-noted changes which brings you to the hell of install and configuration bugs