This version of sdbm merely has all the dbm_* names translated to sdbm_* so that we can link ndbm and sdbm into the same executable. (It also has the bad() macro redefined to allow a zero-length key.) Fri Apr 15 10:15:30 EDT 1994. Additional portability/configuration changes for libsdbm by Andy Dougherty doughera@lafayette.edu. Mon Mar 22 03:24:47 PST 1999. sdbm_exists added to the library by Russ Allbery .