Library. 2020 Eng. Mastering Ubuntu Server

Managing Users and Permissions

sudo useradd -d /home/user1 -m user1 -- create the user
ls -l /home -- view the contents of the directory
ls -la /dir -- view the contents of the directory
passwd -- change the password
sudo passwd user1 -- change the password for user
sudo adduser user2 -- create the user
nano /usr/sbin/adduser -- open script adduser in text editor
sudo userdel user2 -- remove the user without removing user data
sudo mkdir -p /store/file_archive -- create backup storage folder
sudo mv /home/user2 /store/file_archive -- move user folder to backup storage folder
sudo userdel -r user2 -- remove the user with removing user data
sudo rm -r /home/user2 -- remove the user folder
cat /etc/passwd -- view user accounts
sudo cat /etc/shadow | grep root -- see passwords hashes
sudo passwd -l root -- lock the password of the named account
sudo passwd -u root -- unlock the password of the named account
sudo passwd -S root -- report password status on the named account