linux 系统信息查看命令

查看系统版本:lsb_release -a[root@localhost /]# lsb_release -aLSB Version:    :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarchDistributor ID: CentOSDescription:    CentOS release 6.1 (Final)Release:        6.1Codename:       Final查看内核版本:uname -aLinux localhost.localdomain 2.6.32-131.0.15.el6.x86_64 #1 SMP Sat Nov 12 15:11:58 CST 2011 x86_64 x86_64 x86_64 GNU/Linux查看cpu型号:cat /proc/cpuinfo[root@localhost /]# cat /proc/cpuinfoprocessor       : 0vendor_id       : GenuineIntelcpu family      : 6model           : 26model name      : Intel(R) Xeon(R) CPU           E5506  @ 2.13GHz...... # 查看物理CPU个数cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l查看硬盘空间情况df -lm [root@localhost /]# df -l文件系统                 1K-块      已用      可用 已用% 挂载点/dev/sda3            604758736  20379244 553659492   4% / tmpfs                  8160484         0   8160484   0% /dev/shm /dev/sda1               495844     35901    434343   8% /boot /dev/sda5            302379456   4760128 282259328   2% /opt查看内存:free -m  [root@localhost /]# free -mt              total       used       free     shared    buffers     cached Mem:         15938      14204       1734          0        356      10597 -/+ buffers/cache:       3250      12688 Swap:        19997          0      19997 Total:       35936      14204      21732Swap为虚拟内存，当物理内存不够时,系统就会使用到swap,但swap速度比真实内存的速度要慢的多,当你电脑用到swap的时候,说明你内存不够了,需要加内存