<리눅스>
[root@localhost ~]# free
total used free shared buffers cached
Mem: 2071868 1997328 74540 0 159112 929580
-/+ buffers/cache: 908636 1163232
Swap: 1052216 0 1052216
[root@localhost ~]# grep 'MemTotal:' /proc/meminfo
MemTotal: 2071868 kB
[root@localhost ~]# top
top - 11:27:49 up 1 day, 3:26, 5 users, load average: 0.33, 0.29, 0.16
Tasks: 166 total, 1 running, 164 sleeping, 0 stopped, 1 zombie
Cpu(s): 4.5%us, 1.6%sy, 0.0%ni, 93.7%id, 0.2%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2071868k total, 2007772k used, 64096k free, 159608k buffers
Swap: 1052216k total, 0k used, 1052216k free, 929824k cached
<FreeBSD>
# sysctl hw.physmem
hw.physmem = 536473600
# vmstat
procs memory page faults cpu
r b w avm fre flt re pi po fr sr w0 in sy cs us sy id
2 3 0 261960 336540 2133 273 558 0 0 0 219 1357 1367 414 20 79 1
# cpu 정보
sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu'
# 메모리
sysctl hw.realmem