I use the standard Unix utility "seq" almost daily as part of shell one-liners. Lots of things are named with a sequential component. Sometimes iterating over t

I use the standard Unix utility "seq" almost daily as part of shell one-liners. Lots of things are named with a sequential component. Sometimes iterating over those is easily done with a shell glob, but sometimes it's just simpler to do "for i in $(seq 1 8); do restart foo-$i; done". It's very useful, but basically impossible to discover except by happening to see somebody else use it. So I really don't wonder that somebody would end up unknowingly reimplementing it.