Linux查看内核、CPU等信息的常用命令

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查看系统内核版本命令：

    uname -a
    more /etc/*release
    more /etc/redhat-release
    more /proc/version

[root@localhost ~]# uname -a
Linux localhost.localdomain 2.6.9-22.ELsmp #1 SMP Mon Sep 19 18:00:54 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux

[root@localhost ~]# more /etc/*release
Red Hat Enterprise Linux AS release 4 (Nahant Update 2)

[root@localhost ~]# more /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 2)

    [root@localhost ~]# more /etc/issue
    Red Hat Enterprise Linux AS release 4 (Nahant Update 2)
    Kernel \r on an \m

[root@localhost ~]# more /proc/version
Linux version 2.6.9-22.ELsmp (bhcompile@crowe.devel.redhat.com) (gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)) #1 SMP Mon Se

p 19 18:00:54 EDT 2005

查看cpu信息

grep "model name" /proc/cpuinfo

[root@localhost ~]# grep "model name" /proc/cpuinfo
model name : Dual-Core AMD Opteron(tm) Processor 2216

    [root@localhost ~]# more /proc/cpuinfo
    processor    : 0
    vendor_id    : AuthenticAMD
    cpu family    : 15
    model           : 65
    model name    : Dual-Core AMD Opteron(tm) Processor 2216
    stepping        : 2
    cpu MHz       : 2412.409
    cache size    : 1024 KB
    physical id     : 0
    siblings        : 2
    core id       : 0
    cpu cores    : 2
    fpu          : yes
    fpu_exception : yes
    cpuid level     : 1
    wp              : yes
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht sysca
    ll nx mmxext lm 3dnowext 3dnow pni cx16 ts fid vid ttp 芬+3
    bogomips        : 4849.66
    TLB size        : 1088 4K pages
    clflush size : 64
    cache_alignment : 64
    address sizes : 40 bits physical, 48 bits virtual
    power management: ts fid vid ttp [4] [5]

    processor    : 1
    vendor_id    : AuthenticAMD
    cpu family    : 15
    model           : 65
    model name    : Dual-Core AMD Opteron(tm) Processor 2216
    stepping        : 2
    cpu MHz       : 2412.409
    cache size    : 1024 KB
    physical id     : 0
    siblings        : 2
    core id       : 1
    cpu cores    : 2
    fpu          : yes
    fpu_exception : yes
    cpuid level     : 1
    wp              : yes
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht sysca
    ll nx mmxext lm 3dnowext 3dnow pni cx16 ts fid vid ttp 芬+3
    bogomips        : 4816.89
    TLB size        : 1088 4K pages
    clflush size : 64
    cache_alignment : 64
    address sizes : 40 bits physical, 48 bits virtual
    power management: ts fid vid ttp [4] [5]

    processor    : 2
    vendor_id    : AuthenticAMD
    cpu family    : 15
    model           : 65
    model name    : Dual-Core AMD Opteron(tm) Processor 2216
    stepping        : 2
    cpu MHz       : 2412.409
    cache size    : 1024 KB
    physical id     : 1
    siblings        : 2
    core id       : 2
    cpu cores    : 2
    fpu          : yes
    fpu_exception : yes
    cpuid level     : 1
    wp              : yes
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht sysca
    ll nx mmxext lm 3dnowext 3dnow pni cx16 ts fid vid ttp 芬+3
    bogomips        : 4816.89
    TLB size        : 1088 4K pages
    clflush size : 64
    cache_alignment : 64
    address sizes : 40 bits physical, 48 bits virtual
    power management: ts fid vid ttp [4] [5]

    processor    : 3
    vendor_id    : AuthenticAMD
    cpu family    : 15
    model           : 65
    model name    : Dual-Core AMD Opteron(tm) Processor 2216
    stepping        : 2
    cpu MHz       : 2412.409
    cache size    : 1024 KB
    physical id     : 1
    siblings        : 2
    core id       : 3
    cpu cores    : 2
    fpu          : yes
    fpu_exception : yes
    cpuid level     : 1
    wp              : yes
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca mov pat pse36 clflush mmx fxsr sse sse2 ht sysca
    ll nx mmxext lm 3dnowext 3dnow pni cx16 ts fid vid ttp 芬+3
    bogomips        : 4816.89
    TLB size        : 1088 4K pages
    clflush size : 64
    cache_alignment : 64
    address sizes : 40 bits physical, 48 bits virtual
    power management: ts fid vid ttp [4] [5]

查看cpu的位数
getconf LONG_BIT

[root@localhost ~]# getconf LONG_BIT
64

    [root@localhost ~]# ls /
    bin dev   home lib lost+found   misc   opt root   selinux   sys tftpboot   update usr
    boot   etc   initrd   lib64   media    mnt proc   sbin   srv    test   tmp    updates   var

要是在root下ls 有lib64文件夹说明系统64

    查看libc、gcc版本
    ldd /sbin/mii-tool
    rpm -qa | grep glibc
    gcc –version

    [root@localhost ~]# ldd /sbin/mii-tool
       libc.so.6 => /lib64/tls/libc.so.6 (0x0000002a9566c000)
       /lib64/ld-linux-x86-64.so.2 (0x0000002a95556000)

    [root@localhost ~]# rpm -qa | grep glibc
    glibc-2.3.4-2.13
    compat-glibc-2.3.2-95.30
    glibc-utils-2.3.4-2.13
    glibc-common-2.3.4-2.13
    glibc-headers-2.3.4-2.13
    glibc-devel-2.3.4-2.13
    compat-glibc-2.3.2-95.30
    glibc-profile-2.3.4-2.13
    glibc-2.3.4-2.13
    glibc-kernheaders-2.4-9.1.98.EL
    compat-glibc-headers-2.3.2-95.30
    glibc-devel-2.3.4-2.13

    [root@localhost ~]# gcc --version
    gcc (GCC) 3.4.4 20050721 (Red Hat 3.4.4-2)
    Copyright (C) 2004 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.   There is NO
    warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

    查看内存信息
    more /proc/meminfo
    grep MemTotal /proc/meminfo

    [root@localhost ~]# more /proc/meminfo
    MemTotal:    4045176 kB
    MemFree:    2424704 kB
    Buffers:       96884 kB
    Cached:        1027088 kB
    SwapCached:       0 kB
    Active:       807884 kB
    Inactive:    618432 kB
    HighTotal:           0 kB
    HighFree:          0 kB
    LowTotal:    4045176 kB
    LowFree:    2424704 kB
    SwapTotal:     2031608 kB
    SwapFree:    2031608 kB
    Dirty:              24 kB
    Writeback:           0 kB
    Mapped:       346192 kB
    Slab:           170056 kB
    Committed_AS: 487688 kB
    PageTables:    8492 kB
    VmallocTotal: 536870911 kB
    VmallocUsed:    1748 kB
    VmallocChunk: 536868683 kB
    HugePages_Total:     0
    HugePages_Free:    0
    Hugepagesize:     2048 kB

[root@localhost ~]# grep MemTotal /proc/meminfo
MemTotal: 4045176 kB