Install latest/stable of prog-exec
Ubuntu 16.04 or later?
Make sure snap support is enabled in your Desktop store.
This tool is for making it easier and relatively safe to pull scripts from the internet and execute them. The tool will pull the script, check the hash matches what is expected, and allow you to read it before choosing to execute it. Thus if the script gets tampered with and deosn't match your expected hash, it will not execute. More info can be found here: http://blog.programster.org/introducing-prog-exec/
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Choose your Linux distribution to get detailed installation instructions. If yours is not shown, get more details on the installing snapd documentation.