type discriminating directory listing

[Guy Harris]

>How about "ls -F", which (on BSD) marks subdirectories with a trailing
>"/" and symlinks with a trailing "@"?

It does the former on S5 as well, although since vanilla S5 doesn't have
symlinks (unless they've snuck it into 3.2), it doesn't do the latter. 
I hope anybody whose S5 *does* have them added it to "ls" that way;
SunOS's S5 "ls" ("/usr/5bin/ls") does that, and I expect S5R4's to do so
as well.