On Fri, Nov 10, 2023 at 01:22:54PM -0500, Greg Wooledge wrote: > It most definitely is *not* everywhere. It's part of GNU coreutils, > and is generally not present on any system that does't use those (BSDs > and commercial Unixes for example).
>From _seq(1)_ on FreeBSD: > The seq command first appeared in Version 8 AT&T UNIX. A seq command > appeared in NetBSD 3.0, and was ported to FreeBSD 9.0. This command > was based on the command of the same name in Plan 9 from Bell Labs and > the GNU core utilities. The GNU seq command first appeared in the 1.13 > shell utilities release. >From _seq(1)_ on OpenBsd: > A seq command appeared in Version 8 AT&T UNIX. This version of seq > appeared in NetBSD 3.0 and was ported to OpenBSD 7.1.