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linuxuname命令用法?

Linuxuname命令用法:命令用於顯示系統信息。

uname可顯示電腦以及操作系統的相關信息。

語法

uname

參數說明:

-a或--all顯示全部的信息。

-m或--machine顯示電腦類型。

-n或--nodename顯示在網絡上的主機名稱。

-r或--release顯示操作系統的發行編號。

-s或--sysname顯示操作系統名稱。

-v顯示操作系統的版本。

--help顯示幫助。

--version顯示版本信息。

顯示計算機類型:

#uname-m

x86_64

顯示計算機名:

#uname-n

runoob-linux

顯示操作系統發行編號:

#uname-r

4.11.0-14-generic

顯示操作系統名稱:

#uname-s

Linux

顯示系統版本與時間:

#uname-v

#20~16.04.1-UbuntuSMPWedAug909:06:22UTC2017

卡羅拉linuxoss是什麽?

linuxoss是在聲卡驅動程序中,壹個是OSS(開放式聲音系統),另壹個是alsa(高級Linux聲音體系結構)。OSS是壹個商用聲卡驅動程序,妳需要付費。壹般來說,我們使用的是alsa的聲音架構。

AdvancedLinuxsoundarchitecture縮寫為alsa,中文譯為Linux高級音響系統。Alsa不僅包括對聲卡的支持和驅動程序;

其功能如下:

1。高效支持所有音頻接口,從普通用戶的聲卡到專業級多聲道音頻設備;

2。聲卡驅動程序完全模塊化設計;

3。SMP和線程安全設計。

4。開發庫(alsa-LIB)提供了簡單方便的程序設計,具有先進的效果和功能;

linuxdmesg命令詳解?

linuxdmesg命令參數及用法詳解(linux顯示開機信息命令)

功能說明:顯示開機信息。

語法:dmesg

補充說明:kernel會將開機信息存儲在ringbuffer中。您若是開機時來不及查看信息,可利用dmesg來查看。開機信息亦保存在/var/log目錄中,名稱為dmesg的文件裏。

參數:

-c顯示信息後,清除ringbuffer中的內容。

-s緩沖區大小>預設置為8196,剛好等於ringbuffer的大小。

-n設置記錄信息的層級。擴展閱讀壹:dmesg命令主要用途

主要應用:

dmesg用來顯示內核環緩沖區(kernel-ringbuffer)內容,內核將各種消息存放在這裏。在系統引導時,內核將與硬件和模塊初始化相關的信息填到這個緩沖區中。內核環緩沖區中的消息對於診斷系統問題通常非常有用。在運行dmesg時,它顯示大量信息。通常通過less或grep使用管道查看dmesg的輸出,這樣可以更容易找到待查信息。例如,如果發現硬盤性能低下,可以使用dmesg來檢查它們是否運行在DMA模式:

$dmesg|grepDMA

...

ide0:BM-DMAat0xf000-0xf007,BIOSsettings:hda:DMA,hdb:DMA

ide1:BM-DMAat0xf008-0xf00f,BIOSsettings:hdc:DMA,hdd:DMA

...上面幾行可以說明每個IDE設備正在什麽模式下運行。如果以太網連接出現問題,那麽可以在dmesg日誌中搜索eth:

$dmesg|grepeth

forcedeth.c:ReverseEngineerednForce

ethernetdriver.Version0.49.

eth0:forcedeth.c:subsystem:0147b:1c00

boundto0000:00:04.0

eth0:noIPv6routerspresent如果壹切正常,那麽dmesg顯示每個網卡的硬件配置信息。如果某項系統服務未能得到正確的配置,dmesg日誌很快就填滿錯誤消息,這是診斷故障的良好起點。

還可以用來探測系統內核模塊的加載情況,比如要檢測ACPI的加載情況,使用dmesg|grepacpi

dmesg|egrep-i''(apm|acpi)''

Kernelcommandline:vga=274quietconsole=ttyS3,9600acpi=no-idleoot=/dev/hda3

ACPI:CoreSubsystemversion

ACPI:Subsystemenabled

ACPI:Systemfirmwaresupports:C2

ACPI:plvl2lat=99plvl3lat=1001

ACPI:C2enter=1417C2exit=354

ACPI:C3enter=-1C3exit=-1

ACPI:NotusingACPIidle

ACPI:Systemfirmwaresupports:S0S1S4S5

擴展閱讀二:dmesg命令使用示例

使用示例

示例壹將開機信息發郵件

mandmesg寫道

Theprogramhelpsuserstoprintouttheirbootupmessages.Insteadofcopyingthemessagesbyhand,theuserneedonly:

dmesg>boot.messages

andmailtheboot.messagesfiletowhoevercandebugtheirproblem.

#dmesg>boot.messages

#ls-lboot.messages

-rw-r--r--1rootroot1583812-0912begin_of_the_skype_highlighting

1583812-0912免費end_of_the_skype_highlighting:55boot.messages#mail-s"BootLogofLinuxServer"public@web3q.netboot.messages

#示例二瀏覽dmesg輸出的信息

#uname-a

Linuxnew552.6.18-194.el5#1SMPTueMar1621:52:43EDT2010i686i686i386GNU/Linux#dmesg|less

Linuxversion2.6.18-194.el5(mockbuild@x86-007.build.bos.redhat.com)(gccversion4.1.220080704(RedHat4.1.2-48))#1SMPTueMar1621:52:43EDT2010

BIOS-providedphysicalRAMmap:

BIOS-e820:0000000000010000-000000000009fc00(usable)

BIOS-e820:000000000009fc00-00000000000a0000(reserved)

BIOS-e820:00000000000e0000-0000000000100000(reserved)

BIOS-e820:0000000000100000-000000001f7d0000(usable)

BIOS-e820:000000001f7d0000-000000001f7efc00(reserved)

BIOS-e820:000000001f7efc00-000000001f7fb000(ACPINVS)

BIOS-e820:000000001f7fb000-000000001f800000(reserved)

BIOS-e820:00000000e0000000-00000000f0000000(reserved)

BIOS-e820:00000000fec00000-00000000fec02000(reserved)

BIOS-e820:00000000fed20000-00000000fed9b000(reserved)

BIOS-e820:00000000feda0000-00000000fedc0000(reserved)

BIOS-e820:00000000ffb00000-00000000ffc00000(reserved)

BIOS-e820:00000000fff00000-0000000100000000(reserved)

0MBHIGHMEMavailable.

503MBLOWMEMavailable.

Memoryforcrashkernel(0x0to0x0)notwithinpermissiblerange

disablingkdump

Usingx86segmentlimitstoapproximateNXprotection

Onnode0totalpages:128976

DMAzone:4096pages,LIFObatch:0

Normalzone:124880pages,LIFObatch:31

DMI2.3present.

UsingAPICdriverdefault

ACPI:RSDP(v000HP)@0x000fe270

ACPI:RSDT(v001HP30C40x31100620HP0x00000001)@0x1f7efc84

ACPI:FADT(v002HP30C40x00000002HP0x00000001)@0x1f7efc00

ACPI:MADT(v001HP30C40x00000001HP0x00000001)@0x1f7efcb8

ACPI:MCFG(v001HP30C40x00000001HP0x00000001)@0x1f7efd14

ACPI:SSDT(v001HPHPQPpc0x00001001MSFT0x0100000e)@0x1f7f6698

ACPI:DSDT(v001HPDAU000x00010000MSFT0x0100000e)@0x00000000

ACPI:PM-TimerIOPort:0x1008

ACPI:LocalAPICaddress0xfec01000

ACPI:LAPIC(acpi_idlapic_idenabled)

Processor#06:13APICversion20

ACPI:LAPIC_NMI(acpi_idhighedgelint)

ACPI:IOAPIC(idaddressgsi_base)

IOAPIC:apic_id1,version32,address0xfec00000,GSI0-23

:

示例三查看dmesg尾部的信息

#dmesg|tail

Bluetooth:L2CAPver2.8

Bluetooth:L2CAPsocketlayerinitialized

Bluetooth:RFCOMMsocketlayerinitialized

Bluetooth:RFCOMMTTYlayerinitialized

Bluetooth:RFCOMMver1.8

Bluetooth:HIDP(HumanInterfaceEmulation)ver1.1

eth0:noIPv6routerspresent

Installingknfsd(copyright(C)1996okir@monad.swb.de).

NFSD:Using/var/lib/nfs/v4recoveryastheNFSv4staterecoverydirectory

NFSD:starting90-secondgraceperiod

#

示例四安裝SS7卡驅動時的內核日誌

#cdSS7HD_DRIVER/

#ls

bbdddlnx_iss.hbbd_hbi.hbbd_ioc.cbbd_isr.cbbd_pci.cBSD_license.txtGPL_V2-only_license.txtinstall_ss7hd.shMakefile26

bbd_def.hbbd_hs.cbbd_ioc.hbbd_lnx.cbbd_pro.hbuild_ss7hd.shi21555.hMakefile24

#./build_ss7hd.sh

make:Enteringdirectory`/usr/src/kernels/2.6.9-22.EL-i686'

CC/root/setup/ss7dpklnx/SS7HD_DRIVER/bbd_hs.o

CC/root/setup/ss7dpklnx/SS7HD_DRIVER/bbd_ioc.o

CC/root/setup/ss7dpklnx/SS7HD_DRIVER/bbd_isr.o

CC/root/setup/ss7dpklnx/SS7HD_DRIVER/bbd_pci.o

CC/root/setup/ss7dpklnx/SS7HD_DRIVER/bbd_lnx.o

LD/root/setup/ss7dpklnx/SS7HD_DRIVER/ss7hddvr26.o

Buildingmodules,stage2.

MODPOST

CC/root/setup/ss7dpklnx/SS7HD_DRIVER/ss7hddvr26.mod.o

LD/root/setup/ss7dpklnx/SS7HD_DRIVER/ss7hddvr26.ko

make:Leavingdirectory`/usr/src/kernels/2.6.9-22.EL-i686'/command/dmesg.html#./install_ss7hd.sh

#lsmod|grepss7

ss7hddvr26258080

#dmesg|tail

ACPI:PCIinterrupt0000:02:0d.0->GSI9(level,low)->IRQ9

BBD64bit

SS7HD-suspend

DialogicSS7HDDeviceDriverV100.00(SourceV1.21)

Copyright(C)DialogicCorporation2003-2010.AllRightsReserved

Usingmajordevicenumber251.

ACPI:PCIinterrupt0000:02:0d.0->GSI9(level,low)->IRQ9

BBD64bit

#./install_ss7hd.shremove

#lsmod|grepss7

#dmesg|tail

BBD64bit

SS7HD-suspend

DialogicSS7HDDeviceDriverV100.00(SourceV1.21)

Copyright(C)DialogicCorporation2003-2010.AllRightsReserved

Usingmajordevicenumber251.

ACPI:PCIinterrupt0000:02:0d.0->GSI9(level,low)->IRQ9

BBD64bit

SS7HD-suspend

#

示例五打印並清除內核環形緩沖區

#dmesg-c

Linuxversion2.6.18-194.el5(mockbuild@x86-007.build.bos.redhat.com)(gccversion4.1.220080704(RedHat4.1.2-48))#1SMPTueMar1621:52:43EDT2010

BIOS-providedphysicalRAMmap:

BIOS-e820:0000000000010000-000000000009fc00(usable)

BIOS-e820:000000000009fc00-00000000000a0000(reserved)

BIOS-e820:00000000000e0000-0000000000100000(reserved)

BIOS-e820:0000000000100000-000000001f7d0000(usable)

BIOS-e820:000000001f7d0000-000000001f7efc00(reserved)

BIOS-e820:000000001f7efc00-000000001f7fb000(ACPINVS)

BIOS-e820:000000001f7fb000-000000001f800000(reserved)

BIOS-e820:00000000e0000000-00000000f0000000(reserved)

BIOS-e820:00000000fec00000-00000000fec02000(reserved)

BIOS-e820:00000000fed20000-00000000fed9b000(reserved)

BIOS-e820:00000000feda0000-00000000fedc0000(reserved)

BIOS-e820:00000000ffb00000-00000000ffc00000(reserved)

BIOS-e820:00000000fff00000-0000000100000000(reserved)

0MBHIGHMEMavailable.

503MBLOWMEMavailable.

Memoryforcrashkernel(0x0to0x0)notwithinpermissiblerange

disablingkdump

Usingx86segmentlimitstoapproximateNXprotection

Onnode0totalpages:128976

DMAzone:4096pages,LIFObatch:0

Normalzone:124880pages,LIFObatch:31

DMI2.3present.省略輸出

Bluetooth:HIDP(HumanInterfaceEmulation)ver1.1

eth0:noIPv6routerspresent

Installingknfsd(copyright(C)1996okir@monad.swb.de).

NFSD:Using/var/lib/nfs/v4recoveryastheNFSv4staterecoverydirectory

NFSD:starting90-secondgraceperiod

#dmesg#less/var/log/dmesg

Linuxversion2.6.18-194.el5(mockbuild@x86-007.build.bos.redhat.com)(gccversion4.1.220080704(RedHat4.1.2-48))#1SMPTueMar1621:52:43EDT2010

BIOS-providedphysicalRAMmap:

BIOS-e820:0000000000010000-000000000009fc00(usable)

BIOS-e820:000000000009fc00-00000000000a0000(reserved)

BIOS-e820:00000000000e0000-0000000000100000(reserved)

BIOS-e820:0000000000100000-000000001f7d0000(usable)

BIOS-e820:000000001f7d0000-000000001f7efc00(reserved)

BIOS-e820:000000001f7efc00-000000001f7fb000(ACPINVS)

BIOS-e820:000000001f7fb000-000000001f800000(reserved)

BIOS-e820:00000000e0000000-00000000f0000000(reserved)

BIOS-e820:00000000fec00000-00000000fec02000(reserved)

BIOS-e820:00000000fed20000-00000000fed9b000(reserved)

BIOS-e820:00000000feda0000-00000000fedc0000(reserved)

BIOS-e820:00000000ffb00000-00000000ffc00000(reserved)

BIOS-e820:00000000fff00000-0000000100000000(reserved)

0MBHIGHMEMavailable.

503MBLOWMEMavailable.

Memoryforcrashkernel(0x0to0x0)notwithinpermissiblerang