When I'm in my work place with terminal only, I use:
git log --oneline --graph --color --all --decorate
When the OS support GUI, I use:
gitk --all
When I'm in my home Windows PC, I use my own GitVersionTree
If you don't need branch or tag name:
git log --oneline --graph --all --no-decorate
If you don't even need color (to avoid tty color sequence):
git log --oneline --graph --all --no-decorate --no-color
And a handy alias (in .gitconfig) to make life easier:
[alias]
tree = log --oneline --graph --all --no-decorate
Only last option takes effect, so it's even possible to override your alias:
git tree --decorate
if you happen to not have a graphical interface available you can also print out the commit graph on the command line:
git log --oneline --graph --decorate --all
if this command complains with an invalid option --oneline, use:
git log --pretty=oneline --graph --decorate --all
There is a very good answer to the same question.
Adding following lines to "~/.gitconfig":
[alias]
lg1 = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all
lg2 = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n'' %C(white)%s%C(reset) %C(dim white)- %an%C(reset)' --all
lg = !"git lg1"
Source: Stackoverflow.com