NAME

       hadd - Merge ROOT histogram files into one file

SYNOPSIS

       hadd outputfile inputfiles ...

DESCRIPTION

       This  program  will  add  histograms  from a list of ROOT files and write them to a target ROOT file. The
       target file is newly created and must not be identical to one of the source files.

SEE ALSO

       root(1)

       For extensive documentation on the ROOT system, see http://root.cern.ch

       A Users Guide is available from here.

       The classes of ROOT are all documented by the automatic documentation system, and is available online.

ORIGINAL AUTHORS