There is now a little script to make it easier for people
to run the online histotest program in an offline standalone
mode on lxplus. This permits quick monitoring of data files
using the online monitoring and histogram tools.

   The histotest program and histogram display both need to
have a few of the online servers running. The script starts
these servers, then starts histotest with a filename that you
must pass to the script (and an optional maximum number of
events to process). It then launches the histogram display.
When you quit the display, the server processes are stopped
(also histotest if it is still running).

   To be able to use the script you have to setup the L1Calo
online development environment using our nightly build on AFS.
This requires a bash (or similar) shell.

   First source a setup script from our AFS area:
/afs/cern.ch/atlas/project/tdaq/level1/calo/rel/nightly/installed/share/data/L1C
aloRelease/l1calo_lxplus.sh
you might like to define an alias in your .bashrc to save
typing such a long name! Eg
      alias l1setup='source /afs/cern.ch/etc'

   Then you can just run the histo_sa.sh (short for histotest
stand alone) script giving the filename and number of events:

      histo_sa.sh <filename> <maxevs>

   You will get an error message from the IPC server the first
time you run this as it expects to find a file ~/ipc_root.ref
which it will then create for you. The script has a few sleeps
to let one process start before launching the next so be patient.
It should all close down cleanly if you hit control-C (maybe
after a pause and with some error messages).

   NB the histotest program produces a message for every ROS
fragment it finds so in a large file these will rapidly scroll
other messages off the screen.

   There are a few test files in our AFS area:
/afs/cern.ch/atlas/project/tdaq/level1/calo/data/testbeam

   To use other files from the combined testbeam partition
you need to stage them in from CASTOR and then link them
(or copy them to /tmp). Juergens instructions have details:

      http://www.ep.ph.bham.ac.uk/user/thomas/ctb/condensed_info.txt

(look about half way down).