常用的Linux系统信息查看命令

# uname -a # 查看内核/操作系统/CPU信息
# head -n 1 /etc/issue # 查看操作系统版本
# cat /proc/cpuinfo # 查看CPU信息
# hostname # 查看计算机名
# lspci -tv # 列出所有PCI设备
# lsusb -tv # 列出所有USB设备
# lsmod # 列出加载的内核模块
# env # 查看环境变量资源
# free -m # 查看内存使用量和交换区使用量
# df -h # 查看各分区使用情况
# du -sh <目录名> # 查看指定目录的大小
# grep MemTotal /proc/meminfo # 查看内存总量
# grep MemFree /proc/meminfo # 查看空闲内存量
# uptime # 查看系统运行时间

[root@localhost /]# uname -a
Linux localhost 2.6.32-358.el6.i686 #1 SMP Thu Feb 21 21:50:49 UTC 2013 i686 i686 i386 GNU/Linux

[root@localhost /]# head -n 1 /etc/issue
CentOS release 6.4 (Final)

[root@localhost /]# hostname
localhost

[root@localhost /]# lspci -tv
-[0000:00]-+-00.0  Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge
+-01.0-[01]--
+-07.0  Intel Corporation 82371AB/EB/MB PIIX4 ISA
+-07.1  Intel Corporation 82371AB/EB/MB PIIX4 IDE
+-07.3  Intel Corporation 82371AB/EB/MB PIIX4 ACPI
+-07.7  VMware Virtual Machine Communication Interface
+-0f.0  VMware SVGA II Adapter
+-10.0  LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI
+-11.0-[02]--+-00.0  VMware USB1.1 UHCI Controller
|            +-01.0  Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
|            +-02.0  Ensoniq ES1371 [AudioPCI-97]
|            +-03.0  VMware USB2 EHCI Controller
|            \-05.0  Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]

[root@localhost /]# lsusb -tv
Bus#  2
`-Dev#   1 Vendor 0x1d6b Product 0x0001
|-Dev#   2 Vendor 0x0e0f Product 0x0003
`-Dev#   3 Vendor 0x0e0f Product 0x0002
Bus#  1
`-Dev#   1 Vendor 0x1d6b Product 0x0002