Term
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Definition
| File that holds vital user login data |
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Term
| how long can a username be |
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Definition
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Term
| first field of each line of /etc/passwd |
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Definition
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Term
| second field of /etc/passwd |
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Definition
password placeholder
username:x:UID:GID... |
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Term
| List the fields of the lines in /etc/password |
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Definition
| Username:password-placeholder:UID:GID:Comments:Homedir:Shell |
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Term
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Definition
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Term
| list the fields in /etc/group |
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Definition
GroupName:x:GID:GroupMembers
x=password placeholder |
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Term
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Definition
| encrypted password file, and password aging fields |
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Term
| password aging, list the fields |
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Definition
| lastchg days: mindays: maxdays: warddays: inactive days: disabled days: NotUsed |
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Term
| permissions on /etc/shadow |
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Definition
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Term
| verify the consistency of the user Auth. files |
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Definition
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Term
| command to edit the password or shadow files |
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Definition
| vipw - locks the files so that they can't be effed with |
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Term
| You edited password by hand adding an unencrypted password, make it right |
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Definition
pwconv
Converts from /etc/passwd and updates /etc/shadow |
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Term
| edit the group file by hand |
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Definition
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Term
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Definition
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Term
| modify the password aging attributes |
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Definition
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Term
| make user user2 change password on next login |
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Definition
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Term
| modify user user2 so that they can't modify their password for 5 days after they change it |
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Definition
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Term
| list the current password aging parameters for user2 |
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Definition
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Term
| change the finger information for user2 |
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Definition
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Term
| look at the user information for user2 |
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Definition
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Term
| add user2 to the admin group |
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Definition
| usermod -a -G admin user2 |
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Term
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Definition
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Term
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Definition
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Term
| delete user2, include deleting the home dir and mail dir |
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Definition
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Term
| display failed login attempts |
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Definition
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Term
| display recent login information |
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Definition
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Term
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Definition
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Term
| show who is currently logged in |
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Definition
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Term
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Definition
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Term
| add user1 as an administrator of webgroup |
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Definition
| gpasswd -A user1 webgroup |
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Term
| add user2 as a member of webgroup |
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Definition
| gpasswd -a user2 webgroup |
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Term
| what is the point of having a group password |
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Definition
users can use the password to temporarily change into that group with the following command:
newgrp webgroup
enter group password |
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Term
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Definition
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Term
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Definition
| sets system-wide functions and aliases |
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Term
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Definition
| system-wide, sets environment variables |
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Term
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Definition
| scripts located here are called by /etc/profile |
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Term
| remove shell access for an ftp only user, user2 |
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Definition
| chsh -s /sbin/nologin user2 |
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