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55 Cards in this Set

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a file that contains default values used when changing passwords such as an encryption algorithm
/etc/default/passwd
a file that contains default values used when creating user accounts
/etc/default/useradd
the file that contains system groups and their members
/etc/group
a file read at system initialization to decrypt encrypted partitions. It prompts you for the password used to decrypt a partition
/etc/init.d/boot.crypto
a file that contains default values used when creating user accounts
/etc/login.defs
the file that contains user account information such as name, UID, primary group, home directory, and shell
/etc/passwd
a file that can be used to store systemwide variables such as umask
/etc/profile.local
the file that typically contains encrypted passwords and password expiry information for user accounts on the system
/etc/shadow
a file that lists valid system shells such as /bin/bash
/etc/shells
a directory that contains files and directories that are copied to all new user's home direcotries after they are created
/etc/skel
a file that lists the users who are allowed to run certain commands as other users
/etc/sudoers
an encryption method used to encrypt Linux passwords
Blowfish
a command that is used to change the group owner of a file or directory
chgrp (change group) command
chmod (change mode) command
a command that is used to change the mode (permissions) of a file or directory
a command that is used to change the owner and group owner of a file or directory
chown (change owner) command
a permission that allows you to execute files as well as access directory contents
execute permissions
a number that uniquely identifies system groups
GID (Group ID)
a command that is used to run a program as another user within a GNOME desktop environment
gnomesu (GNOME switch user) command
a command that is used to set passwords for group accounts
gpasswd command
when referring to a long file or directory listing, it represents the group ownership of a file or directory
group
a comamnd that is used to add a group to the system
groupadd command
a command that is used to delete a group from the system
groupdel command
a command that is used to modify the name, membership, or GID of a group on the system
groupmod command
a command that displays the groups that a user is a member of.
groups command
a command that displays the UID and GIDs associated with a user account
id command
a permission that allows you to open and edit files as well as add or remove directory contents
write permission
a command that is used to send a message to system users
wall (warn all) command
a command tha tis used to edit the /etc/sudoers file with the vi text editor
visudo command
a command that is used to modify the properties of a user account on the system
usermod command
a command that is used to remove a user account on the system
userdel command
a command that is used to add a user account form the system
useradd command
a command that is used to view and change the system umask
umask command
a system variable that removes permissions on all new files and directories
umask
a number that uniquely identifies ewach system user account
UID (User ID)
User accounts that can be used by system services and cannot be used by users to log in to the system interactively
system users
a command that is used to run commands as another user via entries in /etc/sudoers
sudo command
a command that is used to change the current user account
su (switch user) command
a special permission set on directories that prevents users from removing files that they do not own
sticky bit
a special permission set on executable files.
Set User ID (SUID)
when you run an executable program that has the ______ permission set, you become the owner of teh executable file for the duration of the program
SUID
a special permission set on executable file and directories
Set Group ID (SGID)
a group that a user belongs to that is not the user's primary group
secondary group
user accounts that can be used to log in to the system interactively
regular users
a permission that allows you to open and read files as well as list directory contents
read permission
an executable file on a file system
program
__________ become processes when they are executed
programs
a program that is currently executing on the system and using system resources
process
the group specified for a user in the /etc/passwd file that becomes the group owner on newly created files and directories
primary group
a feature of Linux operating system that allows several processes to run simultaneously; the Linux kernel determines how much time each process has to execute
preemptive multitasking
a command that is used to modify user passwords and expiry information as well as lock and unlock user accounts
passwd command
the user whose name appears in a long listing of a file or directory and who typically has the most permissions to the file or directory
owner
when referring to a long file or directory listing, it represents all users on the Linux system who are not the owner or a member of the group on the file or directory
other
a command that is used to change the current primary group for a user account
newgrp command
the graphical file manager within a SUSE Linux desktop environment
Nautilus
a command that is used to create an encrypted password for use with user or group accounts
mkpasswd command