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130 lines
4.8 KiB
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130 lines
4.8 KiB
Plaintext
Anonymous CVS Access for the ISC DHCP Distribution
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The ISC DHCP distribution can be accessed using "anonymous" CVS.
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"Anonymous" cvs uses the CVS "pserver" mechanism to allow anybody on
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the Internet to access a CVS repository without having to register in
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any way. Anonymous CVS allows you to access changes as soon as the
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DHCP developers commit them, rather than having to wait for the next
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snapshot or patchlevel. Changes that have not yet been released yet
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are not guaranteed to work, but they can nonetheless be useful in many
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cases.
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TABLE OF CONTENTS
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1. What is anonymous CVS?
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2. How can i start using it?
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3. Checking out the latest code in a release
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4. Checking out the latest code
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5. Checking out a specific release
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6. When to update
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WHAT IS ANONYMOUS CVS?
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Anonymous CVS also allows you to browse through the history of the
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DHCP distribution, and examine the revision history of specific files
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to see how they have changed between revisions, to try to figure out
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why something that was working before is no longer working, or just to
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see when a certain change was made.
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HOW CAN I START USING IT?
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To use anonymous CVS to access the DHCP distribution, you must first
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"log in". You should only need to do this once, but it is a
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necessary step, even though access is anonymous. Anonymous users log
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in as user "nobody", password "nobody". To do this, type:
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cvs -d :pserver:nobody@dhcp.cvs.isc.org:/cvsroot login
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You will be prompted for a password - type "nobody". If you get some
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kind of error indicating that cvs doesn't know how to log you in, you
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are probably running an old version of cvs, and should upgrade. This
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should work with cvs version 1.10.
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Once you have logged in, you can check out a version of the DHCP
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distribution, so the next question is, which version?
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CHECKING OUT THE LATEST CODE IN A RELEASE
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There are currently four major versions of the distribution - Release
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1, Release 2, Release 3, and the current development tree. Releases
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1, 2 and 3 are branches in the CVS repository. To check out the
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latest code on any of these branches, you would use a branch tag of
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RELEASE_1, RELEASE_2 or RELEASE_3 in the following command:
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(setenv CVSROOT :pserver:nobody@dhcp.cvs.isc.org:/cvsroot;
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cvs checkout -d dhcp-2.0 -r RELEASE_2 DHCP)
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Note that the example is for Release 2.
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CHECKING OUT THE LATEST CODE
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To check out the current engineering version, use:
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(setenv CVSROOT :pserver:nobody@dhcp.cvs.isc.org:/cvsroot;
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cvs checkout -d dhcp-current DHCP)
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Note that the current engineering version is a work in progress, and
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there is no real guarantee that it will work for you.
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CHECKING OUT A SPECIFIC RELEASE
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You can also check out specific versions of the DHCP distribution.
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There are three kinds of version tags you may find - alpha tags, beta
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tags and release tags. Alpha tags look like this:
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V#-ALPHA-YYYYMMDD
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# is the release number. YYYYMMDD is the date of the release, with a
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4-digit year, the month expressed as a number (January=1), and the day
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of the month specified as a number, with the first day of the month
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being 1.
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Beta tags look like this:
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V#-BETA-%-PATCH-*
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Where # is the release number, % is the Beta number (usually 1) and *
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is the patchlevel. In the future there may also be beta tags that
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look like this:
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V#-#-BETA-%-PATCH-*
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Where #-# is the major version followed by the minor version - for
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example, when the first 3.1 beta comes out, the tag will look like
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this:
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V3-1-BETA-1-PATCH-0
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Release tags look like this:
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V#-%-*
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Where # is the major version, % is the minor version, and * is the
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patchlevel. So the tag for 1.0pl2 is V1-0-2, and to check it out,
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you'd type:
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(setenv CVSROOT :pserver:nobody@dhcp.cvs.isc.org:/cvsroot;
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cvs checkout -d dhcp-1.0pl2 -rV1-0-2 DHCP)
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Whenever changes are checked in to the ISC DHCP repository, or files
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are tagged, a notice is sent to the dhcp-source-changes@isc.org
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mailing list. You can subscribe to this list by sending mail to
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dhcp-source-changes-request@isc.org, and you will then get immediate
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notification when changes are made. You may find the volume of mail
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on this list annoying, however.
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WHEN TO UPDATE
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We do not recommend that you do an update immediately after you see a
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change on the dhcp-source-changes mailing list - instead, it's best to
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wait a while to make sure that any changes that change depends on have
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also been committed. Also, sometimes when development is being done
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on two machines, the developers will check in a tentative change that
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hasn't been tested at all so that they can update on a different
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machine and test the change. The best way to avoid accidentally
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getting one of these changes is to not update aggressively - when a
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change is made, wait a while before updating, to make sure that it's
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not going to be quickly followed by another change.
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