Document difference with `tasklist` on Windows

[jameslairdsmith]

I was trying to use ps to track down whether a particular system process was running on Windows or not. I found that I was able to do so by wrapping up tasklist with shell() but the process I was looking for didn't show up in ps::ps(). There are quite a few processes (at least on my machine) which behave similarly (see reprex below). I don't know that much about how system processes are categorised, it might be that there is a good reason for some to appear and not others. If that's the case, then I would suggest documenting what that difference is to avoid confusion.

library(ps)

nrow(read.csv(text = shell("tasklist /fo csv", intern = T)))
#> [1] 353
nrow(ps())
#> [1] 150

^{Created on 2025-12-08 with reprex v2.1.1}