今風にUbuntuにGitの公開サーバを立てた ref: http://qiita.com/yousan/items/d102833d867972fbed6d

file0.txt

sudo aptitude install git apache22 gitweb

file2.txt

shell> sudo mkdir -p /mnt/git_repositories/sandbox.git
shell> cd /mnt/git_repositories/sandbox.git
shell> sudo git --bare init --shared=true
shell> sudo git update-server-info
shell> sudo chown -R www:www /mnt/git_repositories`

file3.txt

shell> git clone http://git.example.com/git/sandbox.git ./sandbox
shell> cd sandbox; touch hoge; git add hoge; git commit -m 'first commit'
shell> git push

file4.txt

conf:/etc/apache2/sites-available/git
      <Directory />
          Options ExecCGI +FollowSymLinks +SymLinksIfOwnerMatch
          AllowOverride All
          Deny from all
          AuthType Basic
          AuthName "Private"
          AuthBasicProvider ldap
          AuthzLDAPAuthoritative on
          AuthLDAPURL ldap://ldap.example.com/ou=people,dc=example,dc=com?uid
          Satisfy all
          require ldap-user username
       </Directory>

git

<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        ServerName git.example.com
        DocumentRoot /mnt/git_repositories/

        SetEnv GIT_PROJECT_ROOT /mnt/git_repositories/
        SetEnv GIT_HTTP_EXPORT_ALL
        ScriptAlias /git /usr/lib/git-core/git-http-backend

        <Location />
            Order deny,allow
            Deny from all
            AuthType Basic
            AuthName "Git Access"
            AuthUserFile /mnt/git_repositories/.htpasswd
            AuthGroupFile /dev/null
            Require valid-user
        </Location>
        ErrorLog ${APACHE_LOG_DIR}/error_git.log
        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
#        LogLevel debug

        CustomLog ${APACHE_LOG_DIR}/access_git.log combined
</VirtualHost>

git.conf

     <Directory />
          # Options FollowSymLinks

          Options +ExecCGI +FollowSymLinks +SymLinksIfOwnerMatch
          AllowOverride All
          AuthType Basic
          AuthName "Private"
          AuthBasicProvider ldap
          AuthLDAPURL ldap://ldap.example.com/ou=people,dc=example,dc=com?uid
          Satisfy all
          require ldap-user username
       </Directory>