To find the version number of an Adaptive Server, use one of these binaries with a -v flag:
dataserver, diagserver, backupserver, isql, bcp, and buildmaster
Only use buildmaster for version 12.0.x and earlier. diagserver is a diagnostic version of dataserver. Sybase Technical Support may ask you to run diagserver to help in problem solving.
defncopy, and langinstall
$SYBASE/$SYBASE_ASE/bin/dataserver -v Adaptive Server Enterprise/15.0/EBF 13443 ESD#2/P/Sun_svr4/OS 5.8/ase150/2193/32-bit/FBO/Thu May 18 03:21:41 2006 $SYBASE/$SYBASE_ASE/bin/backupserver -v