On CentOS 6 Linux x86_64, the default package manager has git and gitweb.  Both were installed on indy. 

 On indy, anywhere, like in my  home directory, I first create and initialize a git repository, like this:

 

 mkdir indygit

 cd indygit

 git init

 vim a.txt

 echo "a" >> a.txt

 git add a.txt

 git commit

 cd ../

 

 On indy, I make a "bare repository" of my initialized repository, so that I can share it on this server, like this:

 

 git clone --bare --shared indygit /var/lib/git/indygit.git

 

 Those steps are the ONLY thing needed to setup a git server serving your new repository.  

 

 Afterwards, users with accounts can clone your repository, like this:

 

 git clone USER@indy.sdmgenetics.pitt.edu:/var/lib/git/indygit.git

 cd indygit

 cat a.txt

 

 Notice that a new directory was created, named "indygit", with all of the stuff inside.  All of the stuff inside 

 is now in a new local branch called "master":

 

 git branch

 

 The working directory is unrelated to the remote branch, named "origin/master":

 

 git remote -v

 

 Now you can edit, stage and commit a modification:

 

 vim a.txt

 git add a.txt

 git commit

 

 But all of that happens locally.  Push these changes to the server:

 

 git branch

 git push origin master

 

 The 'git push origin master' pushes your current branch (master) to the 'master' branch on the remote named 'origin'

 As long as no other updates have come to the server, those changes will get pushed.  Sometimes you'll need to 

 get everything-on-the-server-that-I-don't-already-have, like this:

 

 git fetch origin

 

 But that modifies origin/master...NOT your local master branch.  To bring your local copy up to date, merge it:

 

 git branch

 git merge origin/master

 

 That 'git merge origin/master' causes your local 'master' branch to merge in the most recent stuff you fetched from the server. 

 

 Now that you are up-to-date (and as long as more updates don't arrive at the server), you are again ready to modify/stage/commit:

 

 vim a.txt

 git add a.txt

 git commit

 git branch

 git push origin master