message: Add comment about "command -v" (hat-tip lostgoat)
diff: @@ -39,6 +39,9 @@ ROOT_CMDS=
  TRACEFS="/sys/kernel/tracing"
  TRACECMD=
  +
  +# Using command -v to get trace-cmd path:
  +# https://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script
  if [ -x "$(command -v trace-cmd)" ]; then
  TRACECMD=$(readlink -f "$(command -v trace-cmd)")
  fi
  