And lots of others. So 'it's an 80's thing' but it will be very hard to get rid of, 'just a few different linux distributions' does not describe the situation accurately.
It also isn't rare to find older boxes still chugging away quietly at some task in a corner somewhere running any one of those older operating systems and those sometimes need software compiled for them as well.
- bsd and derivates (including OS/X)
- linux (64 and 32 bit sub-flavors)
- QnX (though very different under the hood)
And lots of others. So 'it's an 80's thing' but it will be very hard to get rid of, 'just a few different linux distributions' does not describe the situation accurately.
It also isn't rare to find older boxes still chugging away quietly at some task in a corner somewhere running any one of those older operating systems and those sometimes need software compiled for them as well.