Start Using Git

# cd into project your working on
cd <project>
# initialize a git repository
git init  
# add all of the files to the repository
git add .
# now commit the files to repository
git commit -m "My first commit message"

Later, check which files have changed and are out of sync

# this will list changed files and new files
git status
# this will add the newly updated updated_file.php to the commit
# staging area
git add updated_file.php
# commit changes with a good change message
git commit -m "Fixed missing name bug in updated_file.php"

Create a remote repository

# ssh into server and create repository directory
ssh boris@vladivostok.net
mkdir myproject
cd myproject
# --bare option means this repository will be pushed to and pulled
# from but never worked in directly (ie it will be a repository without working
# files).  This caused me no small amount of confusion when I first
# started using git.  
git init --bare
# exit out of distant vladivostok server
# cd into local project
cd <project>
# add the remote repository
git remote add vladivostok ssh:boris@vladivostok.net:myproject
# now you can push a branch of the repository to the remote
# repository, "master" is the default main branch in git
git push vladivostok master

Sweet! Now your code is backed up on a remote server. In fact your code's entire history is on the remote server. Everytime you make a commit on the local server, you can push that change to the remote server as well.