update PATH, add bin/ for custom programs

[andy_kipp]

I found a couple of suggestions for updating $PATH in this thread:

Adding to the PATH variable

I am trying to add the path of a package to the PATH environmental variable. following is the R command I am using: Sys.setenv(PATH=$PATH:/path to the package/) But I am getting the following error: Error: unexpected '$' in "Sys.setenv(PATH= Anyone knows how can I add the path of a package to the PATH variable in R using the system command?