User and group

$ useradd -m -d /public/user -g group user

$ passwd user

# ssh authorized key

$ su - user

$ ssh-keygen

$ cd ~/.ssh

$ cp id_rsa.pub authorized_keys

$ chmod 700 authorized_keys

# add to group: ftpuser

# add to slurm database: sacctmgr create user name=username account=users

# set limit: sacctmgr modify user username set GrpTRES=cpu=80

# sync

$ cd /var/yp

$ make

$ userdel -r user

# from group

$ gpasswd -d user group

# add to group

$ usermod -a -G group user

# set uid and gid

$ usermod -u 1111 testuser   

$ groupmod -g 1112 testgroup