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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # 切換 R 的版本 因為有時候會安裝多個 R 的版本,但是 RStudio 通常系統會抓最新的版本當作目前的版本,但是有時需要換成舊的 R 版本?請參考以下程式碼(針對 Mac)。 ### Step1 查看目前的版本 ~~~ cd /Library/Frameworks/R.framework/Versions ls -al total 8 drwxrwxr-x 5 root admin 170 8 10 17:02 . drwxrwxr-x 8 root admin 272 8 10 17:02 .. drwxrwxr-x 6 root admin 204 8 11 22:08 3.0 drwxrwxr-x 6 root admin 204 8 11 22:04 3.1 lrwxr-xr-x 1 root admin 3 8 10 17:02 Current -> 3.1 ~~~ ### Step 2刪除 Current ~~~ rm -rf Current ls -al total 0 drwxrwxr-x 4 root admin 136 8 11 22:26 . drwxrwxr-x 8 root admin 272 8 10 17:02 .. drwxrwxr-x 6 root admin 204 8 11 22:08 3.0 drwxrwxr-x 6 root admin 204 8 11 22:04 3.1 ~~~ ### Step 3 建立新的 Creent,並指向 3.0 版本 ~~~ ln -s 3.0 Current ls -al total 8 drwxrwxr-x 5 root admin 170 8 11 22:26 . drwxrwxr-x 8 root admin 272 8 10 17:02 .. drwxrwxr-x 6 root admin 204 8 11 22:08 3.0 drwxrwxr-x 6 root admin 204 8 11 22:04 3.1 lrwxr-xr-x 1 joe admin 3 8 11 22:26 Current -> 3.0 ~~~ 註:Windows & Linux 的部分可以參考 [RStudio](https://support.rstudio.com/hc/en-us/articles/200486138-Using-Different-Versions-of-R) 官方文件
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                              哎呀哎呀视频在线观看