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ListProcessor 8.0

Copyright © 1993-95 by the Corporation for Research and Educational Networking (CREN)
Summarised from the supplied help file and converted to HTML by Donal K. Fellows

Here is a brief description of the set of requests recognized by ListProcessor. Everything appearing in [ ] below is optional; everything appearing in < > is mandatory; all arguments are case insensitive, except mail addresses and passwords. The vertical bar ("|") is used as a logical OR operator between the arguments. Requests may be abbreviated, but you must specify at least the first three characters.

Keep in mind that when referring to a <list>, that list may be of two kinds: local or remote, unless otherwise noted. When referring to a local list, your request will be immediately processed; when referring to a remote list (a list served by another ListProcessor which this system knows about), your request will be appropriately forwarded. Issue a 'lists global' request to get a listing of all local and known remote lists to this ListProcessor.

Recognized requests are:


help [topic]

Without arguments, this file. Otherwise get specific information on the selected topic. Topics may also refer to requests. To learn more about this system issue a 'help listproc' request. To get a listing of all available topics, generate an error message by sending a bogus request like 'help me'.

lists [local|global [keywords]]

Get a list of all local mailing lists served by this server, or of all known local and remote lists. If keywords are specified, they are treated as a logically ANDed list of strings/regular expressions; keywords can be quoted. When keywords are specified, only those lists' descriptions that match the keywords are listed.


Get information about the current release of this ListProcessor system.

For Lists

information [list]

This file if no list is specified, otherwise get information about the specified list.

purge <password>

Remove yourself from all mailing lists on this host.

recipients <list>

Get a list of the current subscribers.  For list owners only.

review <list> [short|description|subscribers]

Review the list's settings, get the list's general information file and get a listing of the current subscribers for the specified list. Only list owners can get the list of subscribers.

run <list> [<password> <cmd [args]>]

Run the specified command with the optional arguments and receive the output from stdout and/or stderr. To get a listing of all available commands to run, omit the arguments, i.e. issue a 'run <list>' request. You have to belong to the specified list, and must have obtained the password from the list's owner; the owner's address may be found in the Errors-To: header line of each delivered message.

set <list> [<option> [arg[s]]]

Without the optional arguments, get a list of all current settings for the specified list. Otherwise change the option to a new value for that list (or the list default if that value is missing).

Valid arguments are:
password <current-password> [new-password]
address <current-password> <new-address>
conceal [YES|NO]
preference [preferences]

Issue a 'help set' request for more information.

query <list>

Same as 'set <list>' with no arguments.

statistics <list> {[subscriber email address(es)] | [-all]}

Get a listing of non-concealed subscribers along with the number of messages each one of them has sent to the specified list. If the optional email addresses are given, then statistics will be collected for these users only.

For example:

stat foo user1@domain user2@domain

will generate statistics about these two subscribers. -all compiles statistics for all users that have posted on the list (whether currently subscribed or not).

subscribe <list> <your name>
join <list> <your name>

The only way to subscribe to a list.

unsubscribe <list>
signoff <list>

Remove yourself from the specified list.


Get a listing of local mailing lists to which you have subscribed.

For Archives

Elided, as not useful for general users

For List Management

Elided, as not useful for general users


Help is also available on the following topics:


Learn more about this system and list management software in general.


Learn how to connect to this ListProcessor over the Internet for live processing of your requests.