Horace papa's life

使用 screen
在命令列下打 screen 就會進入 screen 的天地：

1.creat a file.
   dd if=/dev/zero of=/swapfile bs=1024 count=65536

Check the /tmp folder existing or not and permission of this folder.
Moreover, whether it is no space remained. this folder should not be used 100%.
http://www.linuxquestions.org/questions/linux-server-73/svn-checkout-error-cant-find-a-temporary-directory-internal-error-862710/

1) install vim with command "apt-get install vim"
2) fine the configuration file of vim in "/etc/vim/vimrc" ，copy this file to vimrc.local
3) comment out the line of execute vimrc.local in vimrc.local to aviod re-entry file in loop
4) add one line "colorscheme elflord", the name elford is the name of *.vim file
5) if you have a download script file of vim you can put it into /usr/share/vim/vim72

 
如果要將assembly 嵌入到c code 裡且用GNU的compiler 的話,assembly 會有一些不一樣.
可以參考以下文章
http://www.ethernut.de/en/documents/arm-inline-asm.html

perl:
http://www.cyut.edu.tw/~hcchen/perl/Perl%20tutorial%20Start.htm
http://news.ols3.net/techdoc/old/perl_intro/
bash shell