首先閱讀這份文檔 http://cran.r-project.org/bin/linux/debian/README大意就是Debian 有打包的 R，但是很快就會過期，所以最好使用 CRAN 的 backport 包。
在 /etc/apt/source.list 中加入：
deb http://mirrors.ustc.edu.cm/CRAN/bin/linux/debian squeeze-cran/
然後需要導入公鑰，把下面內容存爲文檔，設爲 jranke_cran.asc
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: SKS 1.1.0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=BRgm
-----END PGP PUBLIC KEY BLOCK-----
root 執行
apt-key add jranke_cran.asc導入。
然後開始安裝R：
apt-get update
apt-get install r-base r-base-dev