Quanta RAM?

Come vedo quanta RAM c'è dentro quel server?
In un modo "scriptabile"?

Solaris:
prtconf -vp|grep Mem

Hp-uX:
dmesg|grep -i physical
cat /var/adm/syslog/syslog|grep -i physical
/usr/sam/lbin/getmem
print_manifest|grep -i physical

Linux:
cat /proc/meminfo |grep MemTotal:
top -n 1|grep Mem|awk '{print $1,$3}'