The onstat -g pos option prints the values for the $INFORMIXDIR/etc/.infos.DBSERVERNAME file.
IBM Informix Dynamic Server Version 10.00.UC1 -- On-Line -- Up 01:58:04 -- 101376 Kbytes
1 7 0 infos ver/size 6 520 2 1 0 snum= 101 shmk=52665801 shmb=000000000a000000 cosvr=1 gpid=2599 qa10_1 3 4 0 onconfig path /work/xps/sqldist/etc/onconfig.xps 4 5 0 host qa10-1 5 6 0 oninit ver IBM Informix Extended Parallel Server Version 8.50.FN145 6 8 0 infos sqlhosts: /work/xps/sqldist/etc/sqlhosts 7 12 0 del 8 13 0 del 9 2 4001 shm id=4001 key=0x52665801 (1382438913) addr=0x a000000 size=19918848 R 10 3 1 sema 1 11 11 0 MRI: addr = 0xb4110e8 version = 0x10001 12 2 2 shm id=2 key=0xab00bf7c (-1426014340) addr=0x 200000000 size=16777216 R 13 2 3 shm id=3 key=0x52665802 (1382438914) addr=0x bb00000 size=9437184 V 14 2 5 shm id=5 key=0x52665803 (1382438915) addr=0x c400000 size=8388608 V 15 2 7 shm id=7 key=0x52665804 (1382438916) addr=0x cc00000 size=32505856 V 16 2 8 shm id=8 key=0x52665805 (1382438917) addr=0x eb00000 size=8388608 V 17 2 9 shm id=9 key=0x52665806 (1382438918) addr=0x f300000 size=8388608 V 18 2 10 shm id=10 key=0x52665807 (1382438919) addr=0x fb00000 size=8388608 V