Asked and answered many times, but I can't get it working!!!
(On CentOS) I have the user userA and I want to remove it from group
#groups userA userA : sftponly #id -Gn userA sftponly #gpasswd -d userA sftponly Removing user userA from group sftponly gpasswd: unknown member userA #tail /etc/group userA:x:509: sftponly:x:510: #tail /etc/passwd userA:x:509:510::/home/userA:/bin/bash/
so gpasswd not working. Also:
usermod -G fourpoints fourpoints
I don't know really what to do, I'm not sure about editing /etc/group either...