* Tom Mitchell <mitch48@xxxxxxxxxxxxx> [13-Jan-2004 23:44]: > On Fri, Jan 09, 2004 at 12:36:40PM +0100, Zeremski Boris wrote: > > > I can't find on Internet how to override limitation creation user names > > with dot (example firs.last). This worked in previous distribution. > > > > Any patch to shadow-utils-4.0.3-12 to allow this? > [SKIP] > The classic dislike and resistance for a user name like "fred.user" is > mostly from the "chown" command. The command "chown user:group" can > also be entered as "chown user.group". This is for compatibility with > history and interoperability with other un.x vendors. Adding dots > opens the door for confusion where a group "bob" and a user > "billy.bob" cause unexpected things to happen (errors, security > lapses). > > If you hack shadow-utils you also have to hack "chown" to disallow > "user:group" == "user.group" usage to avoid the simple errors. I've always followed the rule of escaping or quoting when unsure. This should work: chown some\.user.and\.some\.group some.file or chown "some.user"."and.some.group" some.file Alternatively, changing owner can be done from some file manager which escapes or quotes automagically. One example would be Midnight Commander (/usr/bin/mc). -- Leonid Mamtchenkov. http://www.leonid.maks.net
