NAME
uname - print system information====== uname的作用是打印系统信息
SYNOPSIS
uname [OPTION]...
DESCRIPTION
Print certain system information. With no OPTION, same as -s.
-a, --all
print all information, in the following order, except omit -p and -i
if unknown:
====打印所有的系统信息！！
-s, --kernel-name
print the kernel name
=====打印系统内核名字
-n, --nodename
print the network node hostname
=======打印主机名
-r, --kernel-release
print the kernel release
-v, --kernel-version
print the kernel version
========打印内核的版本
-m, --machine
print the machine hardware name
=======主机的硬件信息
-p, --processor
print the processor type or "unknown"
=====打印处理器的类型，与-m 一致
[root@localhost ~]# uname -m
i686
[root@localhost ~]# uname -p
i686
-i, --hardware-platform
print the hardware platform or "unknown"
======硬件的处理能力
-o, --operating-system
print the operating system
======打印操作系统的名字
--help display this help and exit===显示uname帮助信息
--version
output version information and exit====显示uname的版本号
