Git major commands in one page.

1. 4. Email 5. Basic
1. Setup and 2. Debugging 3. Getting and Snapshotting
Config Creating Projects
config bisect init am add
help blame clone apply status
grep format-patch diff
send-email commit
request-pull reset
rm
mv
6. External 7. Branching and 8. Administration 9. Sharing and 10. Server Admin
Systems Merging Updating Projects
svn branch clean fetch daemon
fast-import checkout gc pull update-server-info
merge fsck push
mergetool reflog remote
log filter-branch submodule
stash instaweb
tag archive
11. Inspection and 12. Plumbing 13. Patching
Comparison Commands
show cat-file rev-list verify-pack diff
log commit-tree rev-parse apply
write-tree
diff count-objects show-ref cherry-pick
shortlog diff-index symbolic-ref rebase
describe hash-object update-index
merge-base update-ref
read-tree
Source: http://git-scm.com/docs