/sbin/hdparm -t /dev/hda
我的硬盘显示：
lsb_release -a 查看系统版本。
cat /etc/redhat-release 看这个配置文件也可以。不过管理员可以修改这里的内容
cat /proc/cpuinfo 查看cpu信息，processor 0 为一个U， 1为两个，flags超线程。
lspci 查看主板信息
free 查内存
fidsk -l 查硬盘空间
df -h 查硬盘
du -sh 查看文件夹大小
top 这个比较全，内存 进程 负载 都有了。
uptime 查运行时间 负载情况
00:00.0 Host bridge: Intel Corp. 915G/P/GV Processor to I/O Controller (rev 0e)
00:01.0 PCI bridge: Intel Corp. 915G/P/GV PCI Express Root Port (rev 0e)
00:1d.0 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 05)
00:1d.1 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 05)
00:1d.2 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 05)
00:1d.3 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 05)
00:1d.7 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 05)
00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev d5)
00:1e.2 Multimedia audio controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 05)
00:1f.0 ISA bridge: Intel Corp. 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge (rev 05)
00:1f.2 IDE interface: Intel Corp. 82801FB/FW (ICH6/ICH6W) SATA Controller (rev 05)
00:1f.3 SMBus: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 05)
01:00.0 VGA compatible controller: nVidia Corporation: Unknown device 0161 (rev a1)
02:05.0 Ethernet controller: Marvell Technology Group Ltd. Gigabit Ethernet Controller (rev 13)
02:06.0 RAID bus controller: VIA Technologies, Inc. VT6410 ATA133 RAID controller (rev 06)
ps:默认情况 centos下lscpi命令 需要root用户才能够执行，ubuntu下 sudo权限 也可以。
查看CPU信息
[root@ftp /]# cat /proc/c
cmdline cpuinfo crypto
[root@ftp /]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) 4 CPU 2.66GHz
stepping : 9
cpu MHz : 2680.494
cache size : 1024 KB
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 pni monitor ds_cpl tm2 cid xtpr
bogomips : 5292.03
查看内存信息
[root@ftp /]# cat /proc/meminfo
MemTotal: 515740 kB
MemFree: 311584 kB
Buffers: 41716 kB
Cached: 90152 kB
SwapCached: 0 kB
Active: 72456 kB
Inactive: 76192 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 515740 kB
LowFree: 311584 kB
SwapTotal: 2096472 kB
SwapFree: 2096312 kB
Dirty: 0 kB
Writeback: 0 kB
Mapped: 28284 kB
Slab: 49284 kB
Committed_AS: 139404 kB
PageTables: 1408 kB
VmallocTotal: 499704 kB
VmallocUsed: 3600 kB
VmallocChunk: 495720 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 4096 kB
查看磁盘分区情况
[root@ftp /]# cat /proc/partitions
major minor #blocks name
3 0 78149687 hda
3 1 714861 hda1
3 2 75336817 hda2
3 3 2096482 hda3
8 0 117219767 sda
8 1 117218241 sda1
[root@ftp /]#