a opensource study website
http://www.lanedo.com/2013/the-hidden-pearls-of-tracker-2/
http://www.lanedo.com/2013/filesystem-monitoring-linux-kernel/
<glib custom event source>
http://www.lanedo.com/2013/the-main-loop-the-engine-of-a-gui-library/
http://coolwhy1.iteye.com/blog/1329452
http://blog.csdn.net/shuningzhang/article/details/5677929
http://www.gtkforums.com/viewtopic.php?t=4667
http://manpages.ubuntu.com/manpages/dapper/man3/Glib::MainLoop.3pm.html
http://blog.csdn.net/gujing001/article/details/9248833
http://yakar.iteye.com/blog/1068198
<git>
http://book.douban.com/review/6465637/
http://www.cppblog.com/deercoder/archive/2011/11/13/160007.html
http://bbs.chinaunix.net/thread-3605709-1-1.html
http://sinojelly.sinaapp.com/2011/08/git-changes-submitted-by-the-previous-method-pay-special-attention-to-change-id-unchanged/
http://xiewenbo.iteye.com/blog/1285693
http://blog.csdn.net/u010670794/article/details/12872691
pthread_once()
http://wjl348436701.blog.163.com/blog/static/55915662201071610128584/
systemd + sysvinit
http://freedesktop.org/wiki/Software/systemd/
http://savannah.nongnu.org/projects/sysvinit
http://www.h-online.com/open/features/Control-Centre-The-systemd-Linux-init-system-1565543.html?page=2
http://www.h-online.com/open/features/Booting-up-Tools-and-tips-for-systemd-1570630.html
http://www.h-online.com/open/news/item/Syslog-replacement-Journal-integrated-into-systemd-1412877.html
https://linuxtoy.org/archives/more-than-upstart-systemd.html
http://0pointer.de/blog/projects/systemd.html
http://blog.dastergon.gr/demystifying-systemd/
https://wiki.archlinux.org/index.php/systemd_%28%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87%29
https://fedoraproject.org/wiki/Systemd/zh-cn
overlay
http://www.chinavideo.org/forum.php?mod=viewthread&tid=10924