打印当前计算机和操作系统的名称、版本及其他细节.
uname（_unix name_的简写
）是一个Unix和类Unix操作系统上的程序，可以打印当前计算机和操作系统的名称、版本及其他细节1。
不加参数时默认行为等价于 uname -s，使用 -a 可打印所有信息，其内容对应如下：
$ uname
Linux hci 5.4.73-1-pve #1 SMP PVE 5.4.73-1 (Mon, 16 Nov 2020 10:52:16 +0100) x86_64 GNU/Linux
↑↑↑↑↑ ↑↑↑ ↑↑↑↑↑↑↑↑↑↑↑↑ ↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑ ↑↑↑↑↑↑ ↑↑↑↑↑↑↑↑↑
1 2 3 4 5 6
1 -> kernal name
2 -> node name
3 -> kernal release
4 -> kernal version
5 -> machine hardware name
6 -> operating system
在 unix-like 系统（如 Debian） 上使用 man uname 查看到的帮助信息如下：
**NAME
uname - print system information
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:
-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 (non-portable)
-i, --hardware-platform
print the hardware platform (non-portable)
-o, --operating-system
print the operating system
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report uname translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later
<https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to
the extent permitted by law.
SEE ALSO
arch(1), uname(2)
Full documentation at: <https://www.gnu.org/software/coreutils/uname>
or available locally via: info '(coreutils) uname invocation'**
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