[NTG-context] understanding mtxrun --generate

Hi, this is not related to the current version of LMTX: When I run install.sh, the file database is regenerated. But in a different terminal window, "context" is not found, even if I run "mtxrun --generate" in the install window again, it works only, if I run this in another terminal window (and then it works for all my open windows). I couldn’t find out yet why. Do you experience the same, and what is the reason? Hraban