centOS下emacs的安装
http://rpm.pbone.net/index.php3/stat/4/idpl/13943962/dir/centos_5/com/emacs-21.4-20.el5.x86_64.rpm.html
rpm -ivh Xaw3d-1.5E-10.1.x86_64.rpm
rpm -ivh emacs-21.4-20.el5.x86_64.rpm
rpm -ivh emacs-common-21.4-20.el5.x86_64.rpm
http://rpm.pbone.net/index.php3/stat/4/idpl/13943962/dir/centos_5/com/emacs-21.4-20.el5.x86_64.rpm.html
rpm -ivh Xaw3d-1.5E-10.1.x86_64.rpm
rpm -ivh emacs-21.4-20.el5.x86_64.rpm
rpm -ivh emacs-common-21.4-20.el5.x86_64.rpm