ders             don't display read/write from fd headers.
    -c, --follow                 peek at any new child processes too.
    -t, --tgid                   peek at all threads where tgid equals <pid>.
    -d, --duplicates-removed     remove duplicate read/writes from the output.
    -V, --version                prints version info.
    -h, --help                   prints this help.

  Press CTRL-C to end output.