查看系统信息 FOR linux

查看OS版本信息
[root@vt-pc-51tv ~]# cat /etc/issue
CentOS release 5.4 (Final)
Kernel \r on an \m 
查看内核版本信息
[root@vt-pc-51tv ~]# uname -a
Linux vt-pc-51tv 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686 i686 i386 GNU/Linux
 
查看挂载点和文件系统信息
[root@vt-pc-51tv ~]# df -Th
Filesystem    Type    Size  Used Avail Use% Mounted on
/dev/sda2     ext3     19G  2.3G   16G  13% /
/dev/sda1     ext3     99M   12M   83M  12% /boot
tmpfs        tmpfs   1014M     0 1014M   0% /dev/shm
/dev/sda4     ext3     92G   13G   75G  15% /opt
 
查看当前分区信息
[root@vt-pc-51tv ~]# fdisk -l

Disk /dev/sda: 440.0 GB, 440087347200 bytes
255 heads, 63 sectors/track, 53504 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        2563    20482875   83  Linux
/dev/sda3            2564        2824     2096482+  82  Linux swap / Solaris
/dev/sda4            2825       14983    97667167+  83  Linux
 
查看当前内存使用信息
[root@vt-pc-51tv ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          2026       1960         65          0        158       1560
-/+ buffers/cache:        241       1785
Swap:         2047          0       2047
 
查看系统进程信息
[root@vt-pc-51tv~]# top
top - 04:12:21 up 12 min,  2 users,  load average: 0.00, 0.16, 0.21
Tasks:  50 total,   2 running,  48 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0% us,  0.3% sy,  0.0% ni, 96.3% id,  3.3% wa,  0.0% hi,  0.0% si
Mem:    515400k total,   412956k used,   102444k free,    27192k buffers
Swap:  2048276k total,        0k used,  2048276k free,   324300k cached
 
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                       
    1 root      16   0  3156  552  472 S  0.0  0.1   0:00.93 init                                           
    2 root      34  19     0    0    0 S  0.0  0.0   0:00.01 ksoftirqd/0    

                                 
 
查看系统当前日期
[root@vt-pc-51tv ~]# date
Fri Jun 18 14:04:14 CST 2010
 
查看系统当前时间
[root@vt-pc-51tv ~]# uptime
 14:04:44 up 21 days, 17:06,  2 users,  load average: 0.00, 0.00, 0.00

 
查看系统当前所在区域及UTC信息
[root@vt-pc-51tv~]# cat /etc/sysconfig/clock
ZONE="Asia/Shanghai"
UTC=false
ARC=false
 
指定查看文件系统信息
[root@vt-pc-51tv~]# file -s /dev/hda1
/dev/hda1: Linux rev 1.0 ext3 filesystem data (needs journal recovery) (large files)
 
查看系统主机名信息
[root@vt-pc-51tv ~]# hostname
vt-pc-51tv
[root@vt-pc-51tv ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=vt-pc-51tv 
查看DNS设置信息
[root@vt-pc-51tv ~]# cat /etc/resolv.conf
nameserver 202.96.199.133
 
查看系统启动信息
[root@vt-pc-51tv~]# dmesg | more
Linux version 2.6.9-78.EL ( [email protected]) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-10)) #1
 Thu Jul 24 23:46:01 EDT 2008
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
 BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000001fef0000 (usable)
 
查看CPU信息
[root@vt-pc-51tv ~]# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      : Intel(R) Xeon(TM) CPU 3.40GHz
stepping        : 3
cpu MHz         : 3392.030
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 1
apicid          : 0
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est cid cx16 xtpr
bogomips        : 6784.06
 
查看CPU位数
[root@vt-pc-51tv ~]# getconf LONG_BIT
32
 
查看内存信息
[root@vt-pc-51tv ~]# cat /proc/meminfo
MemTotal:       515400 kB
MemFree:        103020 kB
Buffers:         26952 kB
Cached:         324172 kB
SwapCached:          0 kB
Active:          76848 kB
Inactive:       281484 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       515400 kB
LowFree:        103020 kB
SwapTotal:     2048276 kB
SwapFree:      2048276 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:          13428 kB
Slab:            44752 kB
CommitLimit:   2305976 kB
Committed_AS:    50648 kB
PageTables:        900 kB
VmallocTotal:   499704 kB
VmallocUsed:      2808 kB
VmallocChunk:   496472 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     4096 kB
 
查看当前网卡配置信息
[root@vt-pc-51tv ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0C:29:84:F8:33 
          inet addr:192.168.1.90  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe84:f833/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1249 errors:0 dropped:0 overruns:0 frame:0
          TX packets:826 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:78415 (76.5 KiB)  TX bytes:142077 (138.7 KiB)
          Interrupt:185 Base address:0x2000
 
lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:12 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:900 (900.0 b)  TX bytes:900 (900.0 b)

查看网卡接品硬件信息

[root@vt-pc-51tv ~]# ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: umbg
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
 
查看主板序列号
[root@vt-pc-51tv ~]# dmidecode | grep -i serial number
              Serial Number: VMware-56 4d 0c b2 74 eb 6b 29-ea bd ea e0 97 84 f8 33
 
查看主板信息
[root@vt-pc-51tv ~]# lspci
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01)
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
00:0f.0 VGA compatible controller: VMware Inc Abstract SVGA II Adapter
00:10.0 SCSI storage controller: BusLogic BT-946C (BA80C30) [MultiMaster 10] (rev 01)
00:11.0 PCI bridge: VMware Inc: Unknown device 0790 (rev 01)
02:00.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 10)
02:02.0 USB Controller: VMware Inc Abstract USB2 EHCI Controller
 
查看鼠标键盘信息
[root@localhost ~]# cat /proc/bus/input/devices
I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
H: Handlers=kbd event0
B: EV=120013
B: KEY=4 2000000 3802078 f840d001 f2ffffdf ffefffff ffffffff fffffffe
B: MSC=10
B: LED=7
 
I: Bus=0011 Vendor=0002 Product=0006 Version=0000
N: Name="ImPS/2 Generic Wheel Mouse"
P: Phys=isa0060/serio1/input0
H: Handlers=mouse0 event1
B: EV=7
B: KEY=70000 0 0 0 0 0 0 0 0
B: REL=103
 
查看USB设备信息
[root@vt-pc-51tv ~]# cat /proc/bus/usb/devices
 
T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 2
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 2.06
S:  Manufacturer=Linux 2.6.9-78.EL uhci_hcd
S:  Product=UHCI Host Controller
S:  SerialNumber=0000:00:07.2
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms
 
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh= 6
B:  Alloc=  0/800 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 2.06
S:  Manufacturer=Linux 2.6.9-78.EL ehci_hcd
S:  Product=EHCI Host Controller
S:  SerialNumber=0000:02:02.0
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=256ms