ntfy
Utility for sending notifications, on demand and when commands finish
...It can be installed in a virtualenv, but with some caveats, Linux notifications require system-site-packages for the virtualenv and OS X notifications don’t work at all. ntfy has support for automatically sending notifications when long-running commands finish in bash and zsh. In bash it emulates zsh’s preexec and precmd functionality with rcaloras/bash-preexec. The backends key specifies what backends to use by default. Each backend has its own configuration, stored in a key of its own name. If you want multiple configs for the same backend type, you can specify any name and then specify the backend with a backend key.