Usage
    ps_os_type()
ps_is_supported()
 
    
    Value
    ps_os_type returns a named logical vector. The rest of the
functions return a logical scalar.
ps_is_supported() returns TRUE if ps supports the current platform.
     
    
    Examples
    ps_os_type()
#>   POSIX WINDOWS   LINUX   MACOS 
#>    TRUE   FALSE    TRUE   FALSE 
ps_is_supported()
#> [1] TRUE