1 git config user.name "Your Name"
2 git config user.email "you@your.site"

 1 $ mkdir mynewproject
 2 $ cd mynewproject
 3 $ git init
 4  Initialized empty Git repository in 
 5  /home/ryansb/mynewproject/.git/
 6 $ vim README
 7 $ git status
 8  # Initial commit
 9  #
10  # Untracked files:
11  #   (use "git add <file>..." to include in what will
12  #   be committed)
13  #
14  #       README
15  nothing added to commit but untracked files present
16  (use "git add" to track)
17 $ git add README

 1 $ git status
 2  # Initial commit
 3  #
 4  # Changes to be committed:
 5  #   (use "git rm --cached <file>..." to unstage)
 6  #
 7  #       new file:   README
 8 $ vim README
 9 $ git status
10  # Initial commit
11  #
12  # Changes to be committed:
13  #   (use "git rm --cached <file>..." to unstage)
14  #
15  #       new file:   README
16  #
17  # Changes not staged for commit:
18  #   (use "git add <file>..." to update what will
19  #   be committed)
20  #   (use "git checkout -- <file>..." to discard
21  #   changes in working directory)
22  #
23  #       modified:   README

1 $ git commit -m "Added README"
2 [master (root-commit) 4f3ea33] Added README
3  1 files changed, 1 insertions(+), 0 deletions(-)
4  create mode 100644 README
5  <Do more commits>
6 $ git log --oneline
7  773c310 added hello.py
8  7275078 More verbosity for the README
9  4f3ea33 Added README

1 # set commit message without opening an editor
2 git commit -m 'commit message'
3 # add only parts of what was changed
4 git add -p

 1 $ vim hello.py
 2 $ git diff
 3  diff --git a/hello.py b/hello.py
 4  index 3148dce..33f348b 100644
 5  --- a/hello.py
 6  +++ b/hello.py
 7  @@ -1,3 +1,3 @@
 8   #!/usr/bin/env python
 9 
10  -print "hello world"
11  +print "Hello, world!"
12 $ git commit -am "Fixed up grammar in hello.py"
13 [master 01ee7f3] Fixed up grammar in hello.py
14  1 files changed, 1 insertions(+), 1 deletions(-)

 1 $ git log --oneline --decorate
 2     1c8ce74 (HEAD, origin/newgitseminar, newgitseminar) Added more on branching
 3     4afbe50 Added slides for branching
 4     151dd2f Finished converting to vanilla markdown
 5     5e130da Added git seminar to front page
 6     d219f44 New Git seminar via Landslide now working
 7     dfbc19c (origin/master, origin/HEAD, master) Changed length of excerpt
 8 
 9     # specify a branch that is on the remote named 'origin'
10 $ git checkout origin/master
11     # specify a branch name
12 $ git checkout master
13     # specify commit ID (or hash)
14 $ git dfbc19c
15     # specify a commit that is 5 commits prior to where HEAD is
16 $ git checkout HEAD~5

1     # get the older version of file 'filename'
2 $ git checkout -- filename
3     # throw away all local changes and switch to branch 'master'
4 $ git checkout -f master

1 $ git checkout branchname

1 $ git checkout -b branchname
2 #or
3 git branch branchname
4 git checkout branchname

1 $ git push origin testfeature:experimental

1 # checkout the branch "grill" from rick (a remote) and call it "bacon"
2 $ git checkout --track -b bacon rick/grill
3 # check out the same branch, but just call it grill
4 $ git checkout -t rick/grill
5 # a common one you'll use is this:
6 $ git checkout -t origin/feature

1 $ git branch
2       master
3     * newgitseminar
4       truncatehtml
5       vanilla_960

 1 git checkout master
 2 git merge experiment
 3 < resolve conflicts >
 4 
 5 Hello
 6 <<<<<<< HEAD
 7 there
 8 =======
 9 experimental
10 >>>>>>> experiment
11 world
12 
13 git commit -m "Merged in my experimental feature"

 1 # unstage a file
 2 $ git reset HEAD <filename>...
 3 # undo the changes to a file
 4 $ git checkout -- <filename>
 5 # delete a file from your staging area, but not working directory
 6 $ git rm --cached <filename>
 7 # view all unstaged changes
 8 $ git diff
 9 # view all staged changes
10 $ git diff --cached
11 # add a file to your last commit
12 $ git commit -m "A commit"
13 $ git add file_i_forgot.txt
14 $ git commit --ammend
15 # see the last 5 days of activity on the repository, concisely
16 $ git log --since=5.days --oneline

1 >> Repository.count(:conditions => 
2     { :parent_id => nil, :public => 1 })
3 => 805411

 1 $ git clone git://github.com/some1/project
 2 Cloning into project...
 3 $ cd project/
 4 $ vim README
 5 $ git commit -am 'made it better'
 6 [master dbeb245] made it better
 7  1 files changed, 2 insertions(+), 0 deletions(-)
 8 $ (fork it on github)
 9 $ git remote add myfork git@github.com:you/project.git
10 $ git push myfork master:feature_name
11 ...
12 To git@github.com:you/project.git
13    9457e38..dbeb245  master -> feature_name