查看linux的内存、Cpu、操作系统版本、位数。

1、内存

       cat /proc/meminfo

MemTotal:     24684544 kB
MemFree:       7124708 kB
Buffers:         64224 kB
Cached:       15940184 kB
SwapCached:     829468 kB
Active:        9636876 kB
Inactive:      7406004 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     24684544 kB
LowFree:       7124708 kB
SwapTotal:     7602144 kB
SwapFree:      1176696 kB
Dirty:             112 kB
Writeback:           0 kB
Mapped:        8546976 kB
Slab:           290188 kB
CommitLimit:  19944416 kB
Committed_AS: 32310808 kB
PageTables:     159060 kB
VmallocTotal: 536870911 kB
VmallocUsed:    267076 kB
VmallocChunk: 536603551 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

2、cpu

      cat /proc/cpuinfo  (physical id是物理cpu的个数编号）

3、操作系统版本

      cat /etc/issue

      Red Hat Enterprise Linux AS release 4 (Nahant Update 6)
      Kernel \r on an \m

      uname -a （64位的）

       Linux localhost.localdomain 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64 x86_64 x86_64 GNU/Linux