Command to check RAM in AIX UNIX
The bootinfo command uses the device configuration databases in information searches.
Just type the following command as the root user:
It will displays amount of real memory in kilobytes. bootinfo command may not be available in latest AIX UNIX version, try following command:
$ lsattr -El sys0 | grep realmem
svmon command - Captures and analyzes a snapshot of virtual memory
The svmon command displays information about the current state of memory. The displayed information does not constitute a true snapshot of memory, because the svmon command runs at user level with interrupts enabled. To print out global statistics, type:
# svmon -G
Read the man page of svmon for more information.