On 2016-09-07 at 06:56:38 -0400, MikeB wrote: > > However, when I try to add a new user, it fails as follows. I've tried > rebooting, etc, but that didn't change anything.
New users have to be added to the extrausers files. sudo adduser --extrausers <name> works for adding a new user. However, the usermod command does not have an '--extrausers' option. All attempts to add my new user to the 'sudo' group fail with form of an error trying to lock '/etc/group'. Oddly, even adduser can't add a user to an existing group. sudo adduser --extrausers foo sudo Adding user `foo' to group `sudo' ... Adding user foo to group sudo gpasswd: cannot lock /etc/group; try again later. adduser: `/usr/bin/gpasswd -a foo sudo' returned error code 1. Exiting. That seems like a bug to me. Can someone suggest a way to add an existing user to the 'sudo' group in Ubuntu-Core? Thanks, Mike
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