chfn(5) — UTek 3.0



CHFN(5)                 COMMAND REFERENCE                 CHFN(5)



NAME
     chfn - definitions for password file gecos field contents

SYNOPSIS
     /usr/lib/chfn

DESCRIPTION
     The chfn file is a collection of regular expressions that
     are used by the chfn(1) utility to check for legal input
     while updating the password file gecos field.  They specify
     the order for the entries and restrict input for each
     section of the field.

     The this file is used one line at a time by chfn(1) first to
     produce the prompt string for the entry and then to check
     the user's input.  Line format is:

          [!][prompt_string];[regular_expr [ | regular_expr ]...]

     The prompt_string is the prompt to be issued for this
     portion of the gecos field.  Example entries should be
     included here.  The current content of the sub-field is
     printed following this prompt string.

     If the first character of the prompt string is "!" that
     sub-field can be changed only by a person logged in as root.
     It will be skipped in chfn(1) calls for any other user.  If
     restricted sub-fields exist, placing them at the end of the
     gecos field will enhance execution speed.

     There is no "and" condition and if the beginning of the line
     and the end of the line are significant they must be
     included in the pattern.  If no pattern exists any input
     will be accepted.

     The "or" construct has beed added to enhance the restricted
     environment of regular expressions.  If "|" is used the
     patterns specified are checked in order.  The first match
     stops the scan.

EXAMPLES
     The following is an example file.  It prompts for a name and
     accepts any input; then asks for a work phone and checks for
     a number of the form XXX-XXXX;  delivery station is
     requested next and a number for mail delivery is requested;
     the user is then asked for a home phone number and its form
     checked; finally, if the user is super user the home machine
     entry is requested.  Note that all patterns include start of
     line and end of line indications.

          Name;
          Work Phone (Example: 555-1212);^[1-9][0-9][0-9]-[0-9][0-9][0-9][0-9]$



Printed 5/12/88                                                 1



CHFN(5)                 COMMAND REFERENCE                 CHFN(5)



          Delivery Station (Example: 77-215);^[Y0-9][0-9]-[0-9][0-9][0-9]$
          Home Phone;^[1-9][0-9][0-9]-[0-9][0-9][0-9][0-9]$
          !Home Machine (Example: tekecs);^tektronix$|^tekecs$|^gumby$

FILES
     /usr/lib/chfn

CAVEATS
     If you are reading this page prior to the manual page for
     chfn(1) it won't make much sense.

     Regular expressions must be legal or changes will not be
     accepted.  No attempt is made to check the existing password
     file entries for correctness, e.g. changes made with vipw(8)
     are not verified.

     This file allows local modification of the restrictions
     placed on users for access to the password file, it helps
     avoid mistakes.  It does not stop the super user from making
     changes outside the chfn(1) utility.

     If changes are made to existing passwd(5) sequences the
     prompts will be unrelated to the existing values until all
     users have updated their information.  Additions to the end
     are the easiest to make.  Changes to the information stored
     here also affects finger(1n) output and must be coordinated
     with the expected information there.

SEE ALSO
     chfn(1), finger(1n), passwd(5), and vipw(8).

























Printed 5/12/88                                                 2

%%index%%
na:240,109;
sy:349,239;
de:588,1680;
ex:2268,676;3256,207;
fi:3463,96;
ca:3559,1055;
se:4614,201;
%%index%%000000000131

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