btw, if dot in username, need colon in chown command

[Paul Pruett <ppruett@webengr.com>]

a little fyi on using dot in usernames....
it does work on openbsd, but have to use colon
with chown commands

I was trying names with a period on current and
ran into a difficulty using chown

chown  somename.lastname file.txt

FAils.... lastname invalid group name


however this works

chown   somename.lastname:  file.txt

and this also works

chown  somename.lastname:somename.lastname  file.txt

----------------------
According to man page -

STANDARDS
     Previous versions of the chown utility used the dot (`.') character 
to distinguish the group name.  This has been changed to be a colon (`:')
character so that user and group names may contain the dot character.