Error reported in MacOS: Error in shell.exec(files[1]) : could not find function "shell.exec"

[rmsharp]

I am working in MacOS (see Sys.info() output below) and am getting an error indicating that a MS Windows specific program is not found. Excerpted lines from the R console follow

library(packagefinder) Loading required package: tools You are working with packagefinder version 0.3.2 findPackage("genetic and colony", display = "browser") Your are searching packages for the terms 'genetic', 'colony' in and mode (matches must have at least one occurence of each of the search terms).

Please wait while index is being searched...

Results: 3 out of 18594 CRAN packages found in 7 seconds.
Error in shell.exec(files[1]) : could not find function "shell.exec"

Sys.info() sysname "Darwin" release "20.6.0" version "Darwin Kernel Version 20.6.0: Tue Oct 12 18:33:42 PDT 2021; root:xnu-7195.141.8~1/RELEASE_X86_64" nodename "prefect.satx.rr.com" machine "x86_64" login "root" user "msharp" effective_user "msharp"