$ which dtrace
which: no dtrace in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/lib/llvm/11/bin:/opt/android-sdk-update-manager/tools:/opt/android-sdk-update-manager/platform-tools:/opt/cuda/bin:/home/kusoneko/.local/bin:/home/kusoneko/.local/bin:/home/kusoneko/.local/bin/cron:/home/kusoneko/.local/bin/statusbar)