User Management

Add User

useradd username  `lowlevel does not create home dir`
passwd username `add the password`
userdel username `delete user`
adduser username `add user with home dir`

Give user sudo access

sudo visudo
# Add entry
# User privilege specification
root    ALL=(ALL:ALL) ALL
username    ALL=(ALL:ALL) ALL

give user login access

usermod -s /bin/bash www-data

block user from login

usermod -s /sbin/nologin <username>

change user id & group id

usermod -u 1000 www-data
groupmod -g 1000 www-data

change user home directory

RUN usermod -d /app www-data