Many users ask about checking out mports or the source code to MidnightBSD using CVS.
Here's a quick rundown. I recommend viewing other tutorials for more details on CVS.
Checking out items anonymously
CVS has concept called a CVSROOT. This is the location of the CVS repository where all the source code is kept. When using MidnightBSD, users will need to checkout from our server.
The quick and dirty method to check out ports: (as root)
cd /usr cvs -d email@example.com:/home/cvs co mports
When prompted, use the password anoncvs
For MidnightBSD source code for the latest development version:
cd /usr cvs -d firstname.lastname@example.org:/home/cvs co src
To checkout 0.1.1-RELEASE:
cd /usr cvs -d email@example.com:/home/cvs co -rRELENG_0_1_1_RELEASE src
This will get you started, but what about all these options.
-d is used to tell CVS where the CVSROOT is.
co is shorthand for checkout, a cvs command.
-r allows you to pick a revision. CVS has tags, branches, and even date options.
src and mports are called modules. Each module corresponds to a directory or category of items stored on the CVS server. MidnightBSD maintains several, but mports and src are the most common.
What about compression?
CVS does offer compression which can help with checkouts over slow connections.
cvs -z 3 -d firstname.lastname@example.org:/home/cvs co mports
Checkout for developers
CVS operates similarly for developers. Replace anoncvs with your username.
For instance, I would use
cvs -d email@example.com:/home/cvs co src
Getting changes for an existing checkout
In CVS terminology, this is called an update.
To update the mports checkout, use
cd /usr/mports cvs update -d -P
-d will create directories that do not exist yet. This is common with the mports system as new ports are created.
-P will prune out old directories that are now empty. Deleted ports are a common reason this may occur.
Here are a few items developers may wish to know to work with MidnightBSD.
After making changes to a file or files in a directory, you need to do the following to save the changes.
This will pop open an editor (usually vi) to add a commit comment. Always leave a comment on what you did (or think you did). Funny comments are acceptable.
Alternatively, you can add a comment via the command line.
cvs commit -m "This should fix the build"
You can also commit one file.
cvs commit myfilename
After checking out code, it is often useful to add files. With mports, you should always use the add command. There are situations where add or a similar command import are used in src.
cvs add filename cvs commit filename
This will add and commit a file named filename. You can add several files at once and directories (but not their contents) this way. A commit is always required to "save" to the server.
If the file is binary, such as an image file (PNG, GIF, etc), you will need to use a special flag to cvs add.
cvs add -kb myfile.png cvs commit
This tells CVS the file is binary and not to try to do text diffs with it.
Some versions of CVS require you to remove each file from the file system first and then delete it from cvs.
rm myfile cvs remove myfile cvs commit
This removes the file named myfile.
A faster approach:
cvs remove -f myfile cvs commit
This deletes the file from the file system and CVS.
Sometimes it is necessary to compare your local files with the server.
cvs diff filename
This will compare a file checked out with the server version showing any differences. You can also use cvs diff without a filename to view all changes in the directory.
Others prefer using
cvs diff -u
This will show unified diffs wich are easier to read.
Checking out from other OSes
Most of the BSDs default to using SSH to checkout source code from our CVS repositories. However, sometimes it is ideal to view code on other platforms.
On Mac OS X, users must set an environment variable to use ssh with cvs.
For instance, to checkout the www site from CVS using OS X anonymously:
setenv CVS_RSH ssh cvs -d firstname.lastname@example.org:/home/cvs co www
CVS_RSH=ssh; export CVS_RSH cvs -d email@example.com:/home/cvs co www