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Account maintainance commands

Normal users

Create new account

  1. Pick a username:
  • Start with the initials of the user
  • Include also second letter of either first name or surname
  • If necessary, add third letter of first name or surname (or a trailing number)
  • The result should be practical (short and related to the name of the user) but must not be a nickname or initals: A username is comparable to the shape of a key - the user may get confused in every day use if it looks like a toy or jewelery!
  1. Create the account:

    localadduser <username> <fullname> <cellphone> [<otherphone>] <addresshint> [<addresshint>...]
  • Full name: Full name (Capital and small letters allowed, as is space and special characters, but no comma!)
  • Cellphone: Cellphone number including country code but without other spaces. Like this: +45 40843136
  • Addresshint: local part of email address, followed by @-sign, and optionally followed by mailgroup. Like these: jonas@ js@pool_of_maildomains
  1. Compose an email based on [[introemail]] skeleton:
  • If an ouside working email address has been provided, then use that as recipient. Alternatively use the contact person of the new user (teacher, boss etc.) as recipient.
  • Add <username>@homebase.dk as Cc:
  • Add hostmaster@homebase.dk as Bcc:
  • Add teknik@lists.homebase.dk as Reply-To:
  1. Send a cellphone text message to the new user with the following text:

    Here is your new password. It MUST be changed within 14 days - read http://wiki.homebase.dk/BrugerKonto and check your mail. The code is: <adgangskode>

    Or in danish: Her er din nye adgangskode. Den SKAL ændres inden 14 dage - læs websiden http://wiki.homebase.dk/BrugerKonto og check din mail. Koden er:

TODO: Make this routine semi-automatic: sending out sms should happen automatically.

Attach groups to account

  1. Attach the account to relevant organisational groups:

    (user=<username>; for group in <group1> [<group2> ...]; do adduser $user $group; done)

Add/replace additional email addresses to account

Use the following command to change hinting of an existing user account:

chfn <username>

Update email address info in smtp server

  1. Run this command:


  2. If satisfied with result, run this coomand:


FIXME: localmaildomainupdate should email diff file to postmaster@homebase.dk

Extend password lifespan

When a user has changed password into something personal, the password lifespan is extended to 1 year:

(user=<username>; chage -M360 -W30 $user)

TODO: The above command should ideally never ever be invoked manyally, but automatically through PAM

Reset password

(user=<username>; gpw && finger $user && passwd $user && chage -M30 -W14 $user)

Warn about password expiry

  1. Notice log messages warning about passwords soon expiring

  2. Send a cellphone textmessage with the following content:

    You must change your password - it soon expires! Read how and why at the web page http://wiki.kaospilot.no/BrugerKonto

    Or in danish: Du skal ændre din adgangskode - den udløber snart! Læs hvordan og hvorfor på websiden http://wiki.kaospilot.no/BrugerKonto

TODO: Rewrite as automated syslog-ng plugin or cron script passing the message to an sms gateway.

Locate users with short password lifespan

(group=<gruppe>; echo $group:; for user in `members $group`; do chage -l $user|egrep -q '^Maximum:[[:blank:]]*[0-9]{2}$' && printf $user'\t' && chage -l $user|egrep '^Password Expires:'; done)