R安装算法包随机森林的问题

在Rstudio和R命令行安装包都不行，如下：
> install.packages("randomForest")
trying URL 'http://cran.rstudio.com/bin/macosx/contrib/3.1/randomForest_4.6-10.tgz'
Content type 'application/x-gzip' length 157609 bytes (153 Kb)
opened URL
==================================================
downloaded 153 Kb

tar: Failed to set default locale

The downloaded binary packages are in
     /var/folders/1_/cd9pck493v3gs3sql_2z4cbc0000gp/T//RtmpFeOlTO/downloaded_packages

从网站下周安装包，然后直接安装就可以了。

XXXMacBook-Pro:~ zhongling$ sudo R CMD INSTALL ~/Downloads/randomForest_4.6-10.tgz
Password:
* installing to library ‘/Library/Frameworks/R.framework/Versions/3.1/Resources/library’
* installing *binary* package ‘randomForest’ ...
* DONE (randomForest)