Usage: gdbm_load [OPTION]... FILE [DB_FILE]
load a GDBM database from a file

  -M, --mmap                 use memory mapping
  -U, --update               update the existing database
  -b, --block-size=NUM       set the block size
  -c, --cache-size=NUM       set the cache size
  -m, --mode=MODE            set file mode
  -n, --no-meta              do not attempt to set file meta-data
  -r, --replace              replace records in the existing database (needs
                             -U)
  -u, --user=NAME|UID[:NAME|GID]
                             set file owner

  -h, --help                 give this help list
      --usage                give a short usage message
  -V, --version              print program version

Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.

Report bugs to <bug-gdbm@gnu.org>.
gdbm home page: <http://www.gnu.org/software/gdbm>