...set $CVSROOT to point at your repository...
$ cvs checkout CVSROOT
$ cd CVSROOT
$ ls
CVS           commitinfo  cvswrappers  loginfo  notify   taginfo
checkoutlist  config      editinfo     modules  rcsinfo  verifymsg

# The "commitinfo" file is used to control pre-commit checks.
# The filter on the right is invoked with the repository and a list
# of files to check.  A non-zero exit of the filter program will
# cause the commit to be aborted.
#
# The first entry on a line is a regular expression which is tested
# against the directory that the change is being committed to, relative
# to the $CVSROOT.  For the first match that is found, then the remainder
# of the line is the name of the filter to run.
#
# If the repository name does not match any of the regular expressions in this
# file, the "DEFAULT" line is used, if it is specified.
#
# If the name "ALL" appears as a regular expression it is always used
# in addition to the first matching regex or "DEFAULT".

^myproject /path/to/record_lastdir.rb

# The "loginfo" file controls where "cvs commit" log information
# is sent.  The first entry on a line is a regular expression which must match
# the directory that the change is being made to, relative to the
# $CVSROOT.  If a match is found, then the remainder of the line is a filter
# program that should expect log information on its standard input.
#
# If the repository name does not match any of the regular expressions in this
# file, the "DEFAULT" line is used, if it is specified.
#
# If the name ALL appears as a regular expression it is always used
# in addition to the first matching regex or DEFAULT.
#
# You may specify a format string as part of the
# filter.  The string is composed of a `%' followed
# by a single format character, or followed by a set of format
# characters surrounded by `{' and `}' as separators.  The format
# characters are:
#
#   s = file name
#   V = old version number (pre-checkin)
#   v = new version number (post-checkin)
#
# For example:
#DEFAULT (echo ""; id; echo %s; date; cat) >> $CVSROOT/CVSROOT/commitlog
# or
#DEFAULT (echo ""; id; echo %{sVv}; date; cat) >> $CVSROOT/CVSROOT/commitlog

^myproject /path/to/collect_diffs.rb --to me@somewhere.invalid %{sVv}

# The "checkoutlist" file is used to support additional version controlled
# administrative files in $CVSROOT/CVSROOT, such as template files.
#
# The first entry on a line is a filename which will be checked out from
# the corresponding RCS file in the $CVSROOT/CVSROOT directory.
# The remainder of the line is an error message to use if the file cannot
# be checked out.
#
# File format:
#
#       [<whitespace>]<filename><whitespace><error message><end-of-line>
#
# comment lines begin with '#'
record_lastdir.rb
collect_diffs.rb
cvsspam.rb

$bugzillaURL = "http://bugzilla.mozilla.org/show_bug.cgi?id=%s"

$jiraURL = "http://jira.atlassian.com/secure/ViewIssue.jspa?key=%s"

$ticketURL = "http://localhost/rt2/Ticket/Display.html?id=%s"

$viewcvsURL = "http://localhost/cgi-bin/viewcvs.cgi/"

$cvswebURL = "http://localhost/cgi/cvsweb.cgi/"

$choraURL = "http://localhost/hord/chora/"

addRecipient "code-review@somewhere.invalid"
addRecipient "project-owner@somewhere.invalid"