DXG ScreenSaver Hack

First, download the ScreenSavers hacker form:
http://www.mobileread.com/forums/showthread.php?t=88004
And unzip this file, copy the “Update_ss_0.43.N_dxg_install.bin” to the root directory of Kindle.

Then In kindle, [HOME] -> [MENU] > Settings -> [MENU] > Update Your Kindle. The DXG will automatically reboot.
Now mount the DXG into your computer, touch the “last” file under the linkss folder, as:

	[root@XXXyyy mnt]# cd linkss/
	[root@XXXyyy linkss]# ls
	auto        backups  cover_cache  info.txt          overflow  screensavers
	autoreboot  bin      etc          mounted_824x1200  run
	[root@XXXyyy linkss]# touch last

Now reboot your Kindle Again, your Kindle will remain the last read page as the ScreenSaver.

My Reading Digest For Git

###View Git LOG git log for view your activities:

$ git log --pretty=oneline
1f7ec5eaa8f37c2770dae3b984c55a1531fcc9e7 Added a comment
582495ae59ca91bca156a3372a72f88f6261698b Added a default value
323e28d99a07d404c04f27eb6e415d4b8ab1d615 Using ARGV
94164160adf8faa3119b409fcfcd13d0a0eb8020 First Commit

git log controlling items:

$ git log --pretty=oneline --max-count=2
$ git log --pretty=oneline --since='5 minutes ago'
$ git log --pretty=oneline --until='5 minutes ago'
$ git log --pretty=oneline --author=<your name>
$ git log --pretty=oneline --all

try man git-log for more details.
For searching last 7 days’ modification:
$ git log –all –pretty=format:'%h %cd %s (%an)’ –since='7 days ago’ Final command:

	$ git log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short'
	$ git log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short
	* 1f7ec5e 2013-04-13 | Added a comment (HEAD, master) [Jim Weirich]
	* 582495a 2013-04-13 | Added a default value [Jim Weirich]
	* 323e28d 2013-04-13 | Using ARGV [Jim Weirich]
	* 9416416 2013-04-13 | First Commit [Jim Weirich]

Explanation:

	--pretty="..." 定义输出的格式
	%h 是提交 hash 的缩写
	%d 是提交的装饰（如分支头或标签）
	%ad 是创作日期
	%s 是注释
	%an 是作者姓名
	--graph 使用 ASCII 图形布局显示提交树
	--date=short 保留日期格式更好且更短

Other tools: gitx (Mac) 和 gitk (任意平台) 在浏览日志历史时十分有用。
###Add Git TAG Add tag for the specified release: “git tag v1-data”, “git tag” to view all of the tags.
Revert the change via;

	git revert HEAD

这将带你到编辑器中。你可以编辑默认的提交信息，或直接 离开它。保存并关闭文件。Or Using the following with no editing:

	$ git revert HEAD --no-edit

Using tag for reverting the changes:

	$ git tag oops
	$ git reset --hard v1
	$ git tag -d oops

More than one modification but commit once:

	$ git add hello.rb
	$ git commit --amend -m "Add an author/email comment"

Change the directory structure:

	git mv hello.rb lib
	git commit -m "Moved hello.rb to lib"

View the directory tree:

	git cat-file -p 4ee1119fb7519dc8298fe5d8e9329f52566afaed

###Merge Merge the branch with master:

	git merge master

when conflicts happens, you will manually merge it.

Revert to specified version:

	git reset --hard <hash>

Clone the remote repository to local, using git clone:

	$ git clone hello cloned_hello
	$ git branch -a
	* master
	  remotes/origin/HEAD -> origin/master
	  remotes/origin/greet
	  remotes/origin/master

git fetch 命令的结果将从远程仓库取得新的提交，但它不会将这些提交合并到本地分支中。If we wnat to sync, then try following:

	[Trusty@~/code/git_learn/git_tutorial/cloned_hello]$ git merge origin/master
	Updating 5de15b7..105a3d0
	Fast-forward
	 README | 1 +
	 1 file changed, 1 insertion(+)
	[Trusty@~/code/git_learn/git_tutorial/cloned_hello]$ cat README 
	This is the Hello World example from the git tutorial.
	(Changed in original)

Clone the directory structure, mainly for backup:

	$ git clone --bare hello hello.git
	Cloning into bare repository hello.git...
	done.
	$ ls hello.git
	HEAD
	config
	description
	hooks
	info
	objects
	packed-refs
	refs

If we want to push changes to the remote, just git push.
迅速跳过克隆仓库，且让我们拉下刚才推送到共享仓库的更改。

	$ cd ../cloned_hello
	$ git remote add shared ../hello.git
	$ git branch --track shared master
	$ git pull shared master
	$ cat README

###On Daemon ####启动 Git 服务器

	# (From the work directory)
	$ git daemon --verbose --export-all --base-path=.

现在，在分开的终端窗口中，转到你的工作目录。

	# (From the work directory)
	$ git clone git://localhost/hello.git network_hello
	$ cd network_hello
	$ ls

你应当看到 hello 项目的拷贝。
####推送到 Git daemon
如果你想要推送到 Git daemon 仓库，添加 –enable=receive-pack 到 git daemon 命令。小心，因为此服务器没有授权，任何人 都能推送到你的仓库。

Install xampp on ArchLinux

Install xampp in ArchLinux via:

	yaourt xampp
	pacman -U xampp-1.8.1-1-x86_64.pkg.tar.xz 

Stop and disable the previous installed service:

	systemctl stop httpd.service
	systemctl stop mysqld
	systemctl stop vsftpd
	systemctl disable httpd.service
	systemctl disable mysqld
	systemctl disable vsftpd

Start the xampp via:

	/opt/lampp/lampp start

Other commands: start/restart/stop.

Automatically Mount in ArchLinux

Use udisk/udisk2/udiskie for automatically mount usb disks.

	pacman -S udisk udisk2 udiskie

Add following line into the .xinitrc:

	udiskie -2 --tray &

If you want to umount all media with the command:

	udiskie-umount -a

umount speicified disk partition:

	udiskie-umount /media/MY_USB_DRIVE

Customize First Page of Colorway Theme

View picture exiv2 info via exiv2 command:

	exiv2 slide-img-1.jpg
	Image size      : 897 x 350

So we must cut out a 897 x 350 picture for displaying as slide show.

Now find out some pictures from internet, and download it to local.

Use convert to fit the image? No, it’s not exact, I use gimp