su
apt-get install subversion
exit
Then, as your own user, run
svnadmin create [repository name]
Note that if you want to share this repository with other users, you should create a group you will all share and create a special directory that you will give the group full RW access to.
For instance:
groupadd svn
[add your users to the svn group in /etc/groups]
su - [yourself]
groups
You should see "svn" listed.
It's important to remember that even though the group has RW access to your new directory, they won't have access to the repository by default. So give it to them explicitly:
chown -R .svn [repo]
chmod -R g+rw [repo]
Now have your users do a checkout with their ssh accounts:
svn co svn+ssh://[user]@[ip]/path/to/repo
(They'll be prompted for their password twice.)
or
svn co file:///path/to/repo
on the same host.
And a commit
svn commit
(Make sure everyone's commenting their commits)
If you see this:
svn: Can't open file '/home/svn/res/db/txn-current-lock': Permission denied
Make sure they're logged in as the appropriate group and that the perms are correct.