> For the complete documentation index, see [llms.txt](https://www.parapathology.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.parapathology.com/statistics-and-bioinformatics/r-project/using-multiple-r-versions.md).

# Using multiple R versions

#### Backup

```
tar -cvzf ~/Documents/R-backup.tgz $(ls -d /Library/Frameworks/R.framework/)
```

#### Backup Libraries

```
tar -cvzf ~/Documents/pkg-backup.tgz $(ls -d /Library/Frameworks/R.framework/Versions/[34]*/Resources/library)
```

#### <https://rud.is/rswitch/>

{% embed url="<https://rud.is/rswitch/>" %}

{% embed url="<https://twitter.com/i/status/1265000050972901376>" %}

{% embed url="<https://twitter.com/serdarbalci/status/1265204703492747265>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265227021325565955>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265231556613943296>" %}

{% embed url="<http://mac.r-project.org>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265232240260386816>" %}

{% embed url="<https://cran.r-project.org/doc/manuals/r-release/R-admin.html#Uninstalling-under-macOS>" %}

```
pkgutil --forget org.r-project.R.el-capitan.fw.pkg
```

<https://mac.r-project.org/high-sierra/R-4.0-branch/x86_64/R-4.0-branch.tar.gz>

{% embed url="<https://twitter.com/hrbrmstr/status/1265232589591384070>" %}

<https://mac.r-project.org/el-capitan/R-3.6-branch/R-GUI-7782-3.6-el-capitan-Release.dmg>

<https://mac.r-project.org/high-sierra/R-4.0-branch/R-GUI-7842-4.0-high-sierra-Release.dmg>

{% embed url="<https://twitter.com/hrbrmstr/status/1265233262072532994>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265242686052843521>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265242897290584064>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265243912534478848>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265244623045263364>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265246351346012161>" %}

{% embed url="<https://twitter.com/hrbrmstr/status/1265265287580057600>" %}