If you are along time GNU user (meaning GNU grep, sed, less, awk, find, tar, etc., etc.) this will be way more frustrating than you realize to use. Having lived in the UNIX days, I can still remember the subtle differences in all the command-line tools driving me nuts. This is actually how the GNU tools became popular even before Linux was a thing, you could install them on irix, hpux, sun, any UNIX, and you wouldn't have to deal with the quirky differences between hpux grep and irix grep (for example).