Provided by: nauty_2.7r3+ds-1_amd64 bug

NAME

       nauty-catg - concatenate files of graphs

SYNOPSIS

       catg [-xv] [infile]...

DESCRIPTION

              Copy files to stdout with all but the first header removed.

       -x     Don't write a header.  In the absence of -x, a header is written if there is one in
              the first input file.

       -v     Summarize to stderr.