3 documents the GNU version of
6 changes the user and/or group ownership of each given file, according
7 to its first non-option argument, which is interpreted as follows. If
8 only a user name (or numeric user ID) is given, that user is made the
9 owner of each given file, and the files' group is not changed. If the
10 user name is followed by a colon or dot and a group name (or numeric group ID),
11 with no spaces between them, the group ownership of the files is
12 changed as well. If a colon or dot but no group name follows the user name,
13 that user is made the owner of the files and the group of the files is
14 changed to that user's login group. If the colon or dot and group are given,
15 but the user name is omitted, only the group of the files is changed;
18 performs the same function as