Running commands whenever a file is changed with entr

New video up on entr, which is a very handy command that will monitor whatever files you give it on standard input and will run a requested command on them whenever they are saved/changed. While it's not a core utility, it's almost a must have for system administration and for those interested in autocompilation or automating other aspects of your system or development environment.

The main website of the project is here which actually gives some pretty salient use cases, but I detail some I've used in the video a bit. I'm sure for a lot of people this is "what they've always been looking for" because it's a task not perfectly filled by the typical programs.