The -passwd built-in map

The -passwd map provides a simple way of configuring automount to distribute user home directories from a single server to any client.
Here is an example of how it could be used:

1. Start automount as:
   
   automount /home/servername -passwd

   servername must be the name of the server on which all user home directories physically reside.

2. On the server, ensure that the user home directories are in:
   
   /home/servername/username

3. On each client intended to automount users' home directories, ensure that the home directory of each user in the /etc/passwd file is in the form:
   
   /home/servername/username

4. Inform users to change directories to their home directories on a client machine by entering:
   
   cd /home/servername/username

1. detects that the /home/servername mount point has been accessed and finds that the -passwd built-in map applies to this mount point.

2. 
   executes getpwnam, which searches the /etc/passwd file on the local host for an entry for user. If it finds an entry, it extracts the ``initial working directory'' field value, /home/servername/username.

3. mounts /home/servername from servername

4. creates a symbolic link from /tmp_mnt/home/servername/username to /home/servername/username

If you wish to distribute user home directories from multiple servers, here is one method:

1. Create an indirect map, including entries such as:

      john      moscow:/u3/&
      bob       moscow:/u3/&
      jim       moscow:/u3/&
      pat       moscow:/u3/&
      beth      moscow:/u3/&
      louise    moscow:/u3/&
      brad      moscow:/u3/&
      pam       prague:/u3/&
      betty     prague:/u3/&
      mike      prague:/u3/&
      tom       prague:/u3/&
      joanne    prague:/u3/&
      doug      prague:/u3/&
      ∗      milan:/u3/&
   

   When reading this indirect map, automount queries milan for any username it does not find in the indirect map.

   For an explanation of the use of the ``&'' and ``∗'' characters, see ``Simplifying map syntax''.

2. Create a master map with the entry:

      /home    indirect_mapname
   

3. To have home directories mounted from the server on which they reside without needing to know the source location, inform users to enter:
   
   cd /home/username

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