Hundreds! Doesn't everyone? Most of them are just bash scripts, many of which have now reached a complexity so high that I wish I'd started writing them in a different language but it's too late now. The majority of the rest are Python. Off the top of my head, the most used ones are: * A replacement front-end for "tar" and various compressors * A script to synchronize my music library to a compressed version for play…
I certainly have. Interestingly, one was the same "sanity check" program for my internet connection, because of the same ISP you mention. Amazing coincidence...I don't think. :-)