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This chapter is from the book

This chapter is from the book

Official Ubuntu Book, The, 7th EditionOfficial Ubuntu Book, The, 7th Edition

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This chapter is from the book

This chapter is from the book

Official Ubuntu Book, The, 7th EditionOfficial Ubuntu Book, The, 7th Edition

Learn More Buy

Dealing with Users and Groups

You can use the following commands to administer users and groups.

  • adduser: The adduser command creates a new user. To create a new user, simply type sudo adduser loginname. This creates the user’s home directory and default group. It prompts for a user password and then further details about the user.
  • passwd: The passwd command changes the user’s password. If run by a regular user, it will change his or her password. If run using sudo, it can change any user’s password. For example, sudo passwd joe changes Joe’s password.
  • who: The who command tells you who is currently logged into the machine.
  • addgroup: The addgroup command adds a new group. To create a new group, type sudo addgroup groupname.
  • deluser: The deluser command removes a user from the system. To remove the user’s files and home directory, you need to add the -remove-home option.
  • delgroup: The delgroup command removes a group from the system. You cannot remove a group that is the primary group of any users.
  • chgrp: The chgrp command changes group ownership of files and directories.

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