My .gitconfig

.gitconfig

# User information. Replace with your own data, obviously.
#
[user]
  name = Hendrik Mans
  email = hendrik@mans.de

# Automatically track branches with the same name
#
[branch]
  autosetupmerge = true

# Push the current branch as the default behaviour
#
[push]
  default = current

# Include a summary of changes in merge commit messages.
#
[merge]
  summary = true

# Color configuration.
#
[color]
  ui = auto
[color "branch"]
  current = yellow reverse
  local = yellow
  remote = green
[color "diff"]
  meta = yellow bold
  frag = magenta bold
  old = red bold
  new = green bold
  whitespace = red reverse
[color "status"]
  added = yellow
  changed = green
  untracked = cyan

# Whitespace handliong
#
[core]
  whitespace = fix,-indent-with-non-tab,trailing-space,cr-at-eol

# Useful aliases
#
[alias]
  st = status
  ci = commit
  br = branch
  co = checkout
  df = diff
  dc = diff --cached
  lg = log -p
  lol = log --graph --decorate --pretty=oneline --abbrev-commit
  lola = log --graph --decorate --pretty=oneline --abbrev-commit --all
  ls = ls-files

I'd like to add:

[alias]
com = !git add . && git commit -am
sync = !git pull --rebase && git push