Git Cheatsheet

Configure name and email address

[code language=”bash”]

git config –global user.name “Vivek Bhadra” –> configuring git with the user name

git config –global user.email “vibhadra@xxxx.com” –> configuring git with user e-mail

git config –global core.autocrlf input

git config –global core.safecrlf true

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Initialize a git repo

[code language=”bash”]

git init

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Add file in the repo

[code language=”bash”]

git add hello.txt
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Commit your changes

[code language=”bash”]

git commit -m “First Commit”
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Checking status of the git repo

[code language=”bash”]

git status
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Removing a file

[code language=”bash”]

git rm –cached hello.txt –> removes the file if not already
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Discard all changes in a modified file

[code language=”bash”]

git checkout — test.c –> discards any changes made
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Unstage any staged file

[code language=”bash”]

git reset HEAD test.c –> unstages a git added file
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Checking log

[code language=”bash”]

git log –pretty=oneline –> shows git history in one line each commit

git log –grep=First –> greps the commit line

man git-log –> shows the git log man page

git log -n 2 –> shows the last two commit history

git log –pretty=format:”Commit Hash: %H, Author: %aN, Date: %aD”
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To revert back to a previous version

[code language=”bash”]

git log –> It will show the SHAsum of the previous versions.
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For example below:

[code language=”bash”]
commit 98a31dfe2c528e4132cd8ca7af5f07e4765958aa Author: unknown Date:   Wed Jun 10 17:26:27 2015 +0100 commit message
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[code language=”bash”]
git reset  –hard
git reset –hard 98a31dfe2c528e4132cd8ca7af5f07e4765958aa
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It will set the HEAD to the specified version.

Revert Git repo to a previous commit

Temporarily switch to a different commit

[code language=”bash”]

git checkout 0d1d7fc32

If you want to move to a old commit and check it in

git checkout -b old-state 0d1d7fc32

Reverting Working Copy to Most Recent Commit

[code language="bash"] git reset --hard HEAD [/code]

To see the difference between your working copy and commit 4ac0a6733
[code language="bash"]
git diff 4ac0a6733 [/code]
To see the previous commits in git
[code language="bash"]
git log --pretty=oneline --decorate --all [/code]
Cloning from an existing git repo
[code language="bash"]
git clone https://github.com/vivekbhadra/kernel_programming.git
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In the above example the git repository is located at https://github.com/vivekbhadra/kernel_programming.git which was created in github.com and can be found here.
Pushing changes up in the master
[code language="bash"]
git push
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Check git branch
[code language="bash"]
vbhadra@vbhadra-VirtualBox:~/kernel_programming$ git branch -av

* master 5a562f2 Sample hellow world module.

remotes/origin/master 5a562f2 Sample hellow world module.

vbhadra@vbhadra-VirtualBox:~/kernel_programming$
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Create a new git branch
[code language="bash"]
git checkout -b 
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In the above the name of the new branch can be anything you like. Ideally a name which can briefly describes what the branch is about would be nice.
[code language="bash"]
vbhadra@vbhadra-VirtualBox:~/kernel_programming$ git branch -av

master 5a562f2 Sample hellow world module.

* new_development 5a562f2 Sample hellow world module.

remotes/origin/master 5a562f2 Sample hellow world module.

vbhadra@vbhadra-VirtualBox:~/kernel_programming$
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Switching between branches
[code language="bash"]
git checkout 
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Example
[code language="bash"]
vbhadra@vbhadra-VirtualBox:~/kernel_programming$ git checkout master

Switched to branch 'master'

Your branch is up-to-date with 'origin/master'.

vbhadra@vbhadra-VirtualBox:~/kernel_programming$ git branch -av

* master 5a562f2 Sample hello world module.

new_development 5a562f2 Sample hello world module.

remotes/origin/master 5a562f2 Sample hello world module.

vbhadra@vbhadra-VirtualBox:~/kernel_programming$ git checkout new_development

Switched to branch 'new_development'

vbhadra@vbhadra-VirtualBox:~/kernel_programming$ git branch -av

master 5a562f2 Sample hellow world module.

* new_development 5a562f2 Sample hellow world module.

remotes/origin/master 5a562f2 Sample hellow world module.

vbhadra@vbhadra-VirtualBox:~/kernel_programming$
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