I do not remember where i found this info before, i can't find it now to show details about. But it is as an options listed in "gbak -?"
-A(RCHIVE_DATABASE) backup database to archive -ARCHIVE_J(OURNALS) backup journals to archive -ARCHIVE_R(ECOVER) recover database from archive -B(ACKUP_DATABASE) backup database to file -BU(FFERS) override page buffers default -C(REATE_DATABASE) create database from backup file -CO(NVERT) backup external files as tables -D(UMP_DATABASE) dump database to file -DE(CRYPT) decrypt backup -E(XPAND) no data compression -EN(CRYPT) encrypt backup -EUA_U(SER) EUA restore user name -EUA_P(ASSWORD) EUA restore password -FA(CTOR) blocking factor -G(ARBAGE_COLLECT) inhibit garbage collection -I(NACTIVE) deactivate indexes during restore -IG(NORE) ignore bad checksums -K(ILL) restore without creating shadows -L(IMBO) ignore transactions in limbo -M(ETA_DATA) backup metadata only -MO(DE) <access> "read_only" or "read_write" access -N(O_VALIDITY) do not restore database validity conditions -NT Non-Transportable backup file format -ODS(_VERSION) restore to specific major ODS version number -O(NE_AT_A_TIME) restore one table at a time -OL(D_DESCRIPTIONS) save old style metadata descriptions -OV(ERWRITE_DUMP) overwrite dump file -P(AGE_SIZE) override default page size -PAS(SWORD) InterBase password -PR(EALLOCATE) preallocate database pages -R(EPLACE_DATABASE) replace database from backup file -RO(LE) InterBase SQL role -SE(RVICE) use services manager -SEP system encryption password -START(ING_TRANS) starting transaction ID for restore -T(RANSPORTABLE) transportable backup -- data in XDR format -UN(TIL) recover database until "timestamp" -USE_(ALL_SPACE) do not reserve space for record versions -USER InterBase user name -V(ERIFY) report each action taken -VA(LIDATE) validate data -W(RITE) async, sync or direct I/O mode -Y <path> redirect/suppress status message output -Z print version number regards, Karol Bieniaszewski Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel