NDG linux essentials m16

UIDs 1-499 are usually reserved for what kind of users?

• Are not used for user accounts, but for group accounts

• Remote log-in accounts

• System accounts, such as server processes

• Log-in (human) users

If a user is deleted, the files and directories that the user owned...

• ...will have no UID owner.

• ...will have no user owner.

• ...will show a UID as the owner, but not user name.

• ...are deleted as well.

Which of the following options for the useradd command allows root to specify the UID to be associated with the account?

• -G

• -g

• -u

• -M

Which of the following options for the useradd command allows root to specify supplementary groups the user will be a member of?

• -g

• -U

• -u

• -G

On a system that does not use UPG, the useradd command will also create a user group. For example, user bob, group bob. True or False?

• True

• False

Which of the following commands will add the group extra to the user bob’s secondary groups in addition to bob‘s current secondary groups?

• usermod -ag bob extra

• usermod -aG extra bob

• usermod -G extra bob

• usermod -a extra bob

Which option for the usermod command can be used to specify a user’s group ID (either primary or secondary)?(choose two)

• -S

• -G

• -g

• -s

For non-root users, the passwd command can only be used to change the password of the user running the command. True or False?

• True

• False

The groupmod command can be used to change a group name. True or False?

• True

• False

The groupmod command can be used to change a group GID. True or False?

• True

• False