proc/mdstat文件
这个文件包含了由md设备驱动程序控制的RAID设备信息。
示例:
[root@localhost ~]# cat /proc/mdstat
Personalities :
unused devices:
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/proc/meminfo文件
这个文件给出了内存状态的信息。它显示出系统中空闲内存,已用物理内存和交换内存的总量。它还显示出内核使用的共享内存和缓冲区总量。这些信息的格式和free命令显示的结果类似。
示例:
[root@localhost ~]# cat /proc/meminfo
MemTotal: 223812 kB
MemFree: 3764 kB
Buffers: 9148 kB
Cached: 92112 kB
SwapCached: 364 kB
Active: 183640 kB
Inactive: 17196 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 223812 kB
LowFree: 3764 kB
SwapTotal: 626524 kB
SwapFree: 620328 kB
Dirty: 12 kB
Writeback: 0 kB
Mapped: 142880 kB
Slab: 12668 kB
Committed_AS: 376732 kB
PageTables: 2336 kB
VmallocTotal: 3907576 kB
VmallocUsed: 2968 kB
VmallocChunk: 3904224 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 4096 kB
--------------------------------------------------------------------------------
/proc/misc文件
这个文件报告用内核函数misc_register登记的设备驱动程序。
示例:
[root@localhost ~]# cat /proc/misc
63 device-mapper
175 agpgart
135 rtc
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/proc/modules文件
这个文件给出可加载内核模块的信息。lsmod程序用这些信息显示有关模块的名称,大小,使用数目方面的信息。
示例:
[root@localhost /]# cat /proc/modules
md5 4033 1 - Live 0x10a7f000
ipv6 232577 8 - Live 0x10b0c000
parport_pc 24705 1 - Live 0x10a8b000
lp 11565 0 - Live 0x10a7b000
parport 41737 2 parport_pc,lp, Live 0x10a55000
autofs4 24005 0 - Live 0x10a74000
i2c_dev 10433 0 - Live 0x109d2000
i2c_core 22081 1 i2c_dev, Live 0x10a6d000
sunrpc 160421 1 - Live 0x10a9d000
ipt_REJECT 6465 1 - Live 0x109da000
ipt_state 1857 5 - Live 0x109eb000
ip_conntrack 40693 1 ipt_state, Live 0x10a62000
iptable_filter 2753 1 - Live 0x10896000
ip_tables 16193 3 ipt_REJECT,ipt_state,iptable_filter, Live 0x109ed000
dm_mod 54741 0 - Live 0x109f8000
button 6481 0 - Live 0x10905000
battery 8517 0 - Live 0x109d6000
ac 4805 0 - Live 0x10908000
uhci_hcd 31449 0 - Live 0x109dd000
ehci_hcd 31557 0 - Live 0x10949000
snd_via82xx 27237 2 - Live 0x10953000
snd_ac97_codec 64401 1 snd_via82xx, Live 0x10912000
snd_pcm_oss 47609 0 - Live 0x1093c000
snd_mixer_oss 17217 2 snd_pcm_oss, Live 0x1090c000
snd_pcm 97993 2 snd_via82xx,snd_pcm_oss, Live 0x10923000
snd_timer 29765 1 snd_pcm, Live 0x108ec000
snd_page_alloc 9673 2 snd_via82xx,snd_pcm, Live 0x108bd000
gameport 4801 1 snd_via82xx, Live 0x108a6000
snd_mpu401_uart 8769 1 snd_via82xx, Live 0x108b9000
snd_rawmidi 26725 1 snd_mpu401_uart, Live 0x108e4000
snd_seq_device 8137 1 snd_rawmidi, Live 0x1083b000
snd 54053 11 snd_via82xx,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device, Live 0x108f6000
soundcore 9889 2 snd, Live 0x1089b000
via_rhine 23497 0 - Live 0x1089f000
mii 4673 1 via_rhine, Live 0x10893000
floppy 58609 0 - Live 0x108a9000
ext3 116809 1 - Live 0x10875000
jbd 74969 1 ext3, Live 0x10861000
lsmod命令显示结果如下:
[root@localhost /]# lsmod
Module Size Used by
md5 4033 1
ipv6 232577 8
parport_pc 24705 1
lp 11565 0
parport 41737 2 parport_pc,lp
autofs4 24005 0
i2c_dev 10433 0
i2c_core 22081 1 i2c_dev
sunrpc 160421 1
ipt_REJECT 6465 1
ipt_state 1857 5
ip_conntrack 40693 1 ipt_state
iptable_filter 2753 1
ip_tables 16193 3 ipt_REJECT,ipt_state,iptable_filter
dm_mod 54741 0
button 6481 0
battery 8517 0
ac 4805 0
uhci_hcd 31449 0
ehci_hcd 31557 0
snd_via82xx 27237 2
snd_ac97_codec 64401 1 snd_via82xx
snd_pcm_oss 47609 0
snd_mixer_oss 17217 2 snd_pcm_oss
snd_pcm 97993 2 snd_via82xx,snd_pcm_oss
snd_timer 29765 1 snd_pcm
snd_page_alloc 9673 2 snd_via82xx,snd_pcm
gameport 4801 1 snd_via82xx
snd_mpu401_uart 8769 1 snd_via82xx
snd_rawmidi 26725 1 snd_mpu401_uart
snd_seq_device 8137 1 snd_rawmidi
snd 54053 11 snd_via82xx,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore 9889 2 snd
via_rhine 23497 0
mii 4673 1 via_rhine
floppy 58609 0
ext3 116809 1
jbd 74969 1 ext3
--------------------------------------------------------------------------------
/proc/mounts文件
这个文件以/etc/mtab文件的格式给出当前系统所安装的文件系统信息。这个文件也能反映出任何手工安装从而在/etc/mtab文件中没有包含的文件系统。
示例:
[root@localhost /]# cat /proc/mounts
rootfs / rootfs rw 0 0
/proc /proc proc rw,nodiratime 0 0
none /dev tmpfs rw 0 0
/dev/root / ext3 rw 0 0
none /dev tmpfs rw 0 0
none /selinux selinuxfs rw 0 0
/proc /proc proc rw,nodiratime 0 0
/proc/bus/usb /proc/bus/usb usbfs rw 0 0
/sys /sys sysfs rw 0 0
none /dev/pts devpts rw 0 0
none /dev/shm tmpfs rw 0 0
none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
--------------------------------------------------------------------------------
/proc/pci文件
这个文件给出PCI设备的信息。用它可以方便地诊断PCI问题。你可以从这个文件中检索到的信息包括诸如IDE接口或USB控制器这样的设备,总线,设备和功能编号,设备延迟以及IRQ编号。
示例:
[root@localhost /]# cat /proc/pci
PCI devices found:
Bus 0, device 0, function 0:
Class 0600: PCI device 1106:3116 (rev 0).
Master Capable. Latency=8.
Prefetchable 32 bit memory at 0xe0000000 [0xe7ffffff].
Bus 0, device 1, function 0:
Class 0604: PCI device 1106:b091 (rev 0).
Master Capable. No bursts. Min Gnt=12.
Bus 0, device 16, function 2:
Class 0c03: PCI device 1106:3038 (rev 12 .
IRQ 5.
Master Capable. Latency=32.
I/O at 0xec00 [0xec1f].
Bus 0, device 16, function 1:
Class 0c03: PCI device 1106:3038 (rev 12.
IRQ 3.
Master Capable. Latency=32.
I/O at 0xe800 [0xe81f].
Bus 0, device 16, function 0:
Class 0c03: PCI device 1106:3038 (rev 12.
IRQ 11.
Master Capable. Latency=32.
I/O at 0xe400 [0xe41f].
Bus 0, device 16, function 3:
Class 0c03: PCI device 1106:3104 (rev 130).
IRQ 10.
Master Capable. Latency=32.
Non-prefetchable 32 bit memory at 0xdfffff00 [0xdfffffff].
Bus 0, device 17, function 0:
Class 0601: PCI device 1106:3177 (rev 0).
Bus 0, device 17, function 1:
Class 0101: PCI device 1106:0571 (rev 6).
IRQ 255.
Master Capable. Latency=32.
I/O at 0xfc00 [0xfc0f].
Bus 0, device 17, function 5:
Class 0401: PCI device 1106:3059 (rev 80).
IRQ 5.
I/O at 0xe000 [0xe0ff].
Bus 0, device 18, function 0:
Class 0200: PCI device 1106:3065 (rev 116).
IRQ 11.
Master Capable. Latency=32. Min Gnt=3.Max Lat=8.
I/O at 0xdc00 [0xdcff].
Non-prefetchable 32 bit memory at 0xdffffe00 [0xdffffeff].
Bus 1, device 0, function 0:
Class 0300: PCI device 5333:8d04 (rev 0).
IRQ 11.
Master Capable. Latency=32. Min Gnt=4.Max Lat=255.
Non-prefetchable 32 bit memory at 0xdfe80000 [0xdfefffff].
Prefetchable 32 bit memory at 0xd0000000 [0xd7ffffff].
--------------------------------------------------------------------------------
/proc/stat文件
这个文件包含的信息有CPU利用率,磁盘,内存页,内存对换,全部中断,接触开关以及赏赐自举时间(自1970年1月1日起的秒数)。
示例:
[root@localhost /]# cat /proc/stat
cpu 31994 3898 7161 381600 15254 451 0
cpu0 31994 3898 7161 381600 15254 451 0
intr 4615930 4404290 3364 0 0 12 0 7 0 2 0 0 12618 112114 0 44142 39381
ctxt 1310498
btime 1148891913
processes 4249
procs_running 4
procs_blocked 0
--------------------------------------------------------------------------------
/proc/uptime文件
这个文件给出自从上次系统自举以来的秒数,以及其中有多少秒处于空闲。这主要供uptime程序使用。比较这两个数字能够告诉你长期来看CPU周期浪费的比例。
示例:
[root@localhost /]# cat /proc/uptime
4477.04 4021.10
--------------------------------------------------------------------------------
/proc/version文件
这个文件只有一行内容,说明正在运行的内核版本。可以用标准的编程方法进行分析获得所需的系统信息。
示例:
[root@localhost /]# cat /proc/version
Linux version 2.6.9-1.667