abs for rtorrent client

rtorrent是目前常用torrent console client，利用Archlinux abs編譯達到優化rtorrent目的

1. 更新Archlinux abs tree

 sudo abs 

2. 將更新rtorrent至home

 cp -r /var/abs/community/rtorrent/ ~/abs 

3. 修改vim PKGBUILD, 加入-with-posix-fallocate用來降低filesystem fragmentation

#./configure --prefix=/usr --disable-debug --with-xmlrpc-c || return 1
./configure --prefix=/usr --disable-debug --with-posix-fallocate|| return 1

4. compile rtorrent

 makepkg -s 

5. 安裝rtorrent package

sudo pacman -U rtorrent-0.8.6-2-i686.pkg.tar.gz 
Password: 
loading package data...
checking dependencies...
(1/1) checking for file conflicts                   [######################] 100%
(1/1) upgrading rtorrent                            [######################] 100%