On Sat, April 21, 2007 2:42 pm, dnk wrote:

I am not sure if anyone else has run into this, but i did today when setting upo a samba server.

http://lists.gobolinux.org/pipermail/gobolinux-users/2007-February/004413.ht...

In an nutshell you get an error like: "usermod: invalid numeric argument", or the user groups are never assigned, etc. So I have been managing manually. I get the exact same symptoms, etc (but doing things like appending groups, etc).

Apparently it can be fixed by downgrading Shadow package to 4.0.17, however with a quick little "rpm -qa | grep shadow", I can see the version with Centos 5 is shadow-utils-4.0.17-12.el5.

I have not spent much time digging in deeper as of yet, but wanted ot see if any others have had this issue in Centos 5.

Is the command you are typing identical to the command in that link except for the group name?

usermod -a groupname -G groupname username

If it is it looks like the error may be with including the groupname after the -a.

I believe the command should just be :

usermod -a -G groupname username

Cheers!