Users and Groups

Commands

usermod -d /home/heart -s /bin/sh -e 2020-10-30 username

usermod -L user (--lock)

usermod -U user (--unlock)

visudo -f /etc/sudoers.d/username

Copy
user ALL=(ALL) NOPASSWD:/path/to/command, /path/to/another
superuser ALL=(ALL) NOPASSWD:ALL

Exercise

Create a new groups oz, dogs, friends.

Create a new user toto with the home directory /home/noPlace/, make sure they use the original Bourne Shell, make their primary group oz, and add dogs as an extra group. Set the initial password as IHeartDorothy which should expire immediately.

Give oz group members the ability to sudo without a password.

Login to the toto account You should be forced to set a new password, change it to anything.

Create a script /danielsTestDrills/cleanup.sh that targets all files in /danielsTestDrills/ except itself and /danielsTestDrills/tempFile, adds them to /danielsTestDrills/answers/testFiles.tar, lists the file names in /danielsTestDrills/tempFile, and then deletes them.

Run that script.

Append the friends group to toto's account.

Exit the toto session.