有時候我們需要知道現在執行的環境是 32 位系統還是 64 位系統還有具體使用什麼版本，可以用 linux 的命令來檢視下，都有哪些比較簡單的辦法那，這裡做個小小的總結。
[root@localhost testcode]# cat /proc/version
linux version 3.10.0-693.el7.x86_64 ([email protected]) (gcc version 4.8.5 20150623 (red hat 4.8.5-16) (gcc) ) #1 smp tue aug 22 21:09:27 utc 2017
cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l[root@localhost testcode]# file /bin/ls
/bin/ls: elf 64-bit lsb executable, x86-64, version 1 (sysv), dynamically linked (uses shared libs), for gnu/linux 2.6.32, buildid[sha1]=3d705971a4c4544545cb78fd890d27bf792af6d4, stripped
這個方法，我用的最多，命令如下：
[root@localhost ~]# uname -m
x86_64
[root@localhost ~]# getconf long_bit
64
[root@localhost ~]# arch
x86_64
[root@localhost ~]# uname -a
linux localhost.localdomain 3.10.0-693.el7.x86_64 #1 smp tue aug 22 21:09:27 utc 2017 x86_64 x86_64 x86_64 gnu/linux
[root@localhost ~]# uname -m
x86_64
[root@localhost ~]# uname -r
3.10.0-693.el7.x86_64
[root@localhost ~]# uname -s
linux
[root@localhost ~]# uname -v
#1 smp tue aug 22 21:09:27 utc 2017
[root@localhost ~]# uname -i
x86_64
[root@localhost ~]# uname -p
x86_64
-a, --all print all information, in the following order,except omit -p and -i if unknown:
-s, --kernel-name print the kernel name
-n, --nodename print the network node hostname
-r, --kernel-release print the kernel release
-v, --kernel-version print the kernel version
-m, --machine print the machine hardware name
-p, --processor print the processor type or "unknown"
-i, --hardware-platform print the hardware platform or "unknown"
-o, --operating-system print the operating system
--help display this help and exit
--version output version information and exit
[root@localhost testcode]# 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
description: centos linux release 7.4.1708 (core)
release: 7.4.1708
codename: core
[root@localhost testcode]# yum install -y redhat-lsb
loaded plugins: fastestmirror, langpacks
[root@localhost testcode]# cat /etc/redhat-release
centos linux release 7.4.1708 (core)
[root@localhost testcode]# cat /proc/version
linux version 3.10.0-693.el7.x86_64 ([email protected]) (gcc version 4.8.5 20150623 (red hat 4.8.5-16) (gcc) ) #1 smp tue aug 22 21:09:27 utc 2017
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