如何在Linux中加载特定版本的R? [英] How can I load a specific version of R in linux?

问题描述

R 3.0是我的默认版本.我已经安装了R 2.14，并且由于软件包依赖性而要使用它.请注意，不能为3.0构建软件包.如何强制ubuntu加载早期版本?

R 3.0 is my default version. I have R 2.14 installed and want to use that due to package dependencies. Note the packages cannot be built for 3.0. How can I force ubuntu to load the earlier version?

推荐答案

您可以相应地设置PATH.有一些工具/库可以满足您的需求(在大学环境中，/usr/local/或/opt中具有多种版本的东西很常见.

You set the PATH accordingly. There are tools / libraries that do that for you (common in university environments with multiple versions of things in /usr/local/ or /opt.

这是一个简单的临时版本:

Here is a simple ad-hoc version:

edd@max:~$ which R                 # my default R
/usr/bin/R
edd@max:~$ R --version | head -1
R version 3.1.2 (2014-10-31) -- "Pumpkin Helmet"
edd@max:~$ cat bin/R-devel.sh      # a wrapper I use
#!/bin/bash
export PATH="/usr/local/lib/R-devel/bin:$PATH"
R "$@"
edd@max:~$                         # gives me another R
edd@max:~$ R-devel.sh --version | head -1
R Under development (unstable) (2014-11-11 r66970) -- "Unsuffered Consequences"
edd@max:~$ 
edd@max:~$ ( PATH="/usr/local/lib/R-devel/bin:$PATH"  R --version | head -1 )
R Under development (unstable) (2014-11-11 r66970) -- "Unsuffered Consequences"
edd@max:~$ 

可以通过脚本或以其他方式进行更改-关键是通过在PATH前面预先添加所需的版本，您最终会找到该版本.

The change at the can be done by a script or in different ways -- the key is that by pre-prending PATH with the one for the version you want, you end up with that version found first.

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