查看位数命令

命令实在是不要太多,为了防止选择性障碍,一致选择第一种方式,后面的仅作为补充。
方法1:

[root@bogon ~]# uname -a
Linux bogon 3.10.0-327.18.2.el7.x86_64 #1 SMP Thu May 12 11:03:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

方法2:显示系统程序信息

[root@bogon ~]# file /bin/ls
/bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically  ed (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=aa7ff68f13de25936a098016243ce57c3c982e06, stripped

方法3:

[root@bogon ~]# cat /proc/version
Linux version 3.10.0-327.18.2.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Thu May 12 11:03:55 UTC 2016

方法4:

(32位的系统中int类型和long类型一般都是4字节,64位的系统中int类型还是4字节的,但是long已变成了8字节inux系统中可用\"getconf WORD_BIT\"和
\"getconf LONG_BIT\"获得word和long的位数。64位系统中应该分别得到32和64。)

[root@bogon ~]# getconf LONG_BIT
64

查看系统版本

方法1:

[root@bogon ~]#  lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID: CentOS
De ion:    CentOS Linux release 7.2.1511 (Core) 
Release:    7.2.1511
Codename:   Core

方法2:


[root@bogon ~]# cat /etc/os-release
NAME=\"CentOS Linux\"
VERSION=\"7 (Core)\"
ID=\"centos\"
ID_LIKE=\"rhel fedora\"
VERSION_ID=\"7\"
PRETTY_NAME=\"CentOS Linux 7 (Core)\"
ANSI_COLOR=\"0;31\"
CPE_NAME=\"cpe:/o:centos:centos:7\"
HOME_URL=\"https://www.centos.org/\"
BUG_REPORT_URL=\"https://bugs.centos.org/\"

CENTOS_MANTISBT_PROJECT=\"CentOS-7\"
CENTOS_MANTISBT_PROJECT_VERSION=\"7\"
REDHAT_SUPPORT_PRODUCT=\"centos\"
REDHAT_SUPPORT_PRODUCT_VERSION=\"7\"

方法3:

[root@bogon ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core) 

方法4:

[root@bogon ~]# rpm -q centos-release
centos-release-7-2.1511.el7.centos.2.10.x86_64

查看内核版本

方法1:

[root@bogon ~]# cat /proc/version
Linux version 3.10.0-327.18.2.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Thu May 12 11:03:55 UTC 2016

方法2:

[root@bogon ~]# uname -a
Linux bogon 3.10.0-327.18.2.el7.x86_64 #1 SMP Thu May 12 11:03:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
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