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19 Cards in this Set
- Front
- Back
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how to change password ?
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passwd
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How to add an account called ‘MyAccount’ ?
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adduser MyAccount # ‘passwd MyAccount’ will allow you to set initial password
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How to remove an user ?
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userdel # but this preserves his files.
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How to remove an user and its files and folders ?
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userdel -r user.name
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How to lock a user account ?
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passwd -l user.name
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How to install sudo in a Debian system ?
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su; apt-get update; apt-get install sudo;
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Where is the file with the accounts on the system that are allowed to use sudo ?
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/etc/sudoers
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How to give sudo privile to an user ?
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usermod -G wheel user.name # wheel is the group in sudoers file that has sudo privile. sudoers file has to be edited wheel is not active in general.
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How to add a new group to the system ?
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sudo groupadd group1
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What groups do we have ?
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/etc/group
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How to add an user to a group ?
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usermod -G group1 john
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How to add an user to additional groups ?
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usermod -a -G group1,group2 john #ATTENTION use commas as delimiter without space
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How to change primary group membership ?
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newgrp group1 #logged in as the user in question.
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Where to find information about the password (in encrypted format) of the system's accounts and optional account aging information ?
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/etc/shadow
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How to add a new user to secondary group ?
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useradd -G group.name new.user
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How to add a new user to several groups ?
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# useradd -G admins,ftp,www,developers jerry # ATTENTION no space after comma.
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How to add a new user to primary group ?
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# useradd -g developers tony
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How to add a existing user to existing group ?
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# usermod -a -G ftp tony
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What is the graphical interface for group adm ?
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system-config-users # in KDE
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