


What are the ways to check the host name in Linux?
linux查看主机名的方法有10种,分别是:1、使用hostnamectl;2、使用hostname;3、使用uname;4、使用nmcli;5、使用sysctl;6、使用cat /etc/hostname;7、使用cat /etc/hosts;8、通过ProcFS;9、使用nmtui;10、通过/etc/sysconfig/network查看即可。
本教程操作系统:linux5.18.14系统、Dell G3电脑。
1,查看主机名使用hostnamectl
hostnamectl 可用于查询和更改系统主机名和相关设置。运行 hostnamectl 命令以查看系统主机名,命令如下所示:
[root@localhost sharplee]# hostnamectl 或者 [root@localhost sharplee]# hostnamectl status
从上图可以看出当前的主机名是localhost.localdomain。
2,查看主机名使用hostname
主机名是用于设置或显示系统的当前主机、域或节点名。许多网络程序都使用这些名称来标识计算机。NIS/YP 也使用该域名,命令如下:
[root@localhost sharplee]#hostname
3,查看主机名使用uname
uname(含义是unix名称)是一个实用命令,它打印系统信息,如名称,版本和有关系统的其他详细信息,以及在其上运行的操作系统。命令如下:
[root@localhost sharplee]# uname -a | awk '{print $2}'
4,查看主机名使用nmcli
nmcli命令是主要用于网络管理控制以及网络状态报表。nmcli主要用于创建、显示、编辑、删除、激活和停用网络连接,以及控制和显示网络设备状态。命令如下:
[root@localhost sharplee]# nmcli general hostname
5,查看主机名使用sysctl
sysctl命令主要用于Linux运行时修改内核参数,可用的参数是 /proc/sys/ 下列出的参数。Procfs 是 Linux 中 sysctl 支持所必需的。您可以使用 sysctl 读取和写入 sysctl 数据。查看主机名命令如下所示。
[root@localhost sharplee]# sysctl kernel.hostname
通过上面五个命令可以查看主机名,接下来再来看一下后面的五个,后面五个主要用于补充说明以及扩展。
6,查看主机名使用cat /etc/hostname
通过查看/etc/hostname文件来查看主机名。命令如下所示。
[root@localhost sharplee]# cat /etc/hostname
7,查看主机名使用cat /etc/hosts
通过查看 /etc/hosts 文件来查看主机名。 /etc/hosts 主要用于配置本机的dns映射关系,一般是ip地址主机名,用于ip和主机的映射关系。命令如下所示。
[root@localhost sharplee]# cat /etc/hosts | grep 127.0.0.1
8,查看主机名通过ProcFS
proc 文件系统 (procfs) 是 Unix 操作系统中的一个特殊文件系统,它提供有关进程的信息和其他系统信息。它有时被称为进程信息伪文件系统。它不包含"真实"文件,而是运行时系统信息(例如系统内存,装载的设备,硬件配置等)。
[root@localhost sharplee]# cat /proc/sys/kernel/hostname
9,查看主机名使用nmtui
nmtui是一个基于图形化的应用程序,用于与NetworkManager进行交互。启动 nmtui 时,系统会提示用户选择要执行的活动,除非选择退出,不然的话回车进去都是选择默认的参数,进去之后可修改。
[root@localhost sharplee]#nmtui
10,查看主机名通过/etc/sysconfig/network
"/etc/sysconfig/network"文件指定对系统上的所有网络接口都有效的其他信息,该命令只能用于RHEL/CentOS 6 系统。Centos6以上的系统都不能使用。
[root@localhost sharplee]#$ cat /etc/sysconfig/network | grep -i hostname HOSTNAME=localhost.localdomain
通过以上10种方式可以看出,查看Linux主机名有很多种方式,但是小编在这里建议大家使用前五种通过命令的方式,这几种方式几乎涵盖了Linux中的任何系统类型。
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