# rcmd_safe_env

0th

Percentile

##### rcmd_safe_env returns a set of environment variables that are more appropriate for rcmd_safe(). It is exported to allow manipulating these variables (e.g. add an extra one), before passing them to the rcmd() functions.

It currently has the following variables:

• CYGWIN="nodosfilewarning": On Windows, do not warn about MS-DOS style file names.

• R_TESTS="" This variable is set by R CMD check, and makes the child R process load a startup file at startup, from the current working directory, that is assumed to be the /test dirctory of the package being checked. If the current working directory is changed to something else (as it typically is by testthat, then R cannot start. Setting it to the empty string ensures that callr can be used from unit tests.

• R_BROWSER="false": typically we don't want to start up a browser from the child R process.

• R_PDFVIEWER="false": similarly for the PDF viewer.

• R_ENVIRON_USER=tempfile(): this prevents R from loading the user .Renviron.

##### Usage
rcmd_safe_env()
##### Details

Note that callr also sets the R_LIBS, R_LIBS_USER, R_LIBS_SITE, R_PROFILE and R_PROFILE_USER environment variables appropriately, unless these are set by the user in the env argument of the r, etc. calls.

##### Value

A named character vector of environment variables.

##### Aliases
• rcmd_safe_env
Documentation reproduced from package callr, version 2.0.0, License: MIT + file LICENSE

### Community examples

Looks like there are no examples yet.