RedHat Linux Week 7 Review

What makes a file or folder hidden on Linux?

• The -h attribute

• When it starts with a period ( . )

• When it starts with a $

• When it has a total permissions value of 8

What command shows you who is currently logged into a Linux system and from where?

• w

• who

• which

• last

Match the following file with the definition that best describes what it does.

• File that holds an encrypted version of all users' passwords as well as the salt and algorithm used

• /etc/hosts

• File that hold information about all user accounts including UIDs and GIDs as well as default shell.

• ~/.bashrc

• File that you can use to establish static IP address to machine name pairings.

• /etc/passwd

• File that alters how your favorite text editor behaves.

• /etc/shadow

• File that allows you to alter how the default shell behaves.

• ~/.vimrc

What command is used when creating new user accounts?

• useradd

• add --user

• usermod -add

• touch-user

What command allows you to make changes to a user account; like adding group membership or locking it out?

• chage

• userman

• adduser

• usermod

Which command will remove the user tot from the system but leave their home directory untouched?

• userdel tot

• userdel -r tot

• userdel tot && rm -rf /home/tot

• deluser /home/tot

Which of the following users is most likely to have the UID 1010?

• root

• syslog

• arpwatch

• tot

What file stores information about all groups on a Linux system like each group's GID?

• /etc/group

• ~/.groups

• /etc/gshadow

• /etc/gid.defs

In the attached entry, what does the $6 after sellison: tell you about sellison's passoword?

• It will need to be changed in 6 more days

• It must be at least 6 characters in length

• Nothing, it is not related to his password

• It was encrypted using the SHA-512 hashing algorithm

If I wanted to change when a user's password will expire on a Linux system, what command would I use?

• usermod

• chage

• userdel

• userman