gentoo-overlay/x11-misc/viewglob/files/README.gentoo

/usr/bin/viewglob is a wrapper for vgd and vgseer (client and
daemon, respectively). Generally speaking, this is what you want to
execute from your shell.

Should you prefer to start viewglob with each shell session, try
something like this:

  if [[ ! $VG_VIEWGLOB_ACTIVE && $DISPLAY ]] ; then
      exec viewglob
  fi

Have a look at http://viewglob.sourceforge.net/faq.html for a
few more viewglob tricks.

There are some known bugs in viewglob with screen. Exercise some
caution and take results with a pinch of salt if you try the two
together.