Git revert commands

# It also takes ranges. This will revert the last two commits:
git revert HEAD~2..HEAD

# It also takes ranges. This will revert the last three commits:
git revert HEAD~3..HEAD

git revert --no-commit 0766c053..HEAD
git commit

This will revert everything from the HEAD back to the commit hash 0766c053

HEAD means the current version. 




More from this link: https://stackoverflow.com/questions/4114095/how-to-revert-a-git-repository-to-a-previous-commit
















Get Linux kernel Souce Code

1. use wget (you could get any version you want):

$ wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.18.3.tar.bz2
or

$ wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.18.tar.gz

2. use git

$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

$ cd linux-2.6

$ git reset --hard v2.6.17 /* Change current branch to 2.6.17 */

more details: http://www.kernel.org/pub/software/scm/git/docs/user-manual.html

How to use git

check out file:
git clone URL CurentFileName

more on: http://git-scm.com/

This is the tutorial of using git to check out linux kernel source:
http://www.kernel.org/pub/software/scm/git/docs/user-manual.html

install git on Cent OS 5.5

1. install webtatic: rpm -ivh http://repo.webtatic.com/yum/centos/5/`uname -i`/webtatic-release-5-0.noarch.rpm
2. continue with yum install: yum install --enablerepo=webtatic git-all

more detailed, please see following link: 

http://genomewiki.ucsc.edu/index.php/Installing_git