你可能知道, 网络统计 (网工作 统计istics) 是一个命令行工具,可用于检查网络配置和活动。 netcat 命令在 RHEL 8、7 和它的克隆(如 CentOS 8 和 7)中不可用。这个简短的教程描述了如何让 netstat 命令在 CentOS 7、RHEL 7 系统中工作。
重要说明:
正如我们的一位读者在下面的评论部分指出的那样,许多旧的 Linux 网络命令已被弃用,取而代之的是它们的 iproute2 对应命令。 尤其是 Netstat 已被 “咝咝” 默认情况下可用的命令。 如果您出于任何原因仍使用 netstat,此提示可能会有所帮助。
在 CentOS 7/8 和 RHEL 7/8 中找不到 netstat 命令
首先,我们将看到如何在 CentOS 8 和 RHEL 8 服务器版本中修复此错误。
修复 CentOS 8 和 RHEL 8 中的“netstat command not found”错误
首先,我们需要找到哪个包提供 ‘网络统计’ 命令使用以下命令:
# dnf provides */netstat
或者,
# dnf whatprovides */netstat
我的 CentOS 8 服务器的示例输出:
net-tools-2.0-0.51.20160912git.el8.x86_64 : Basic networking tools Repo : BaseOS Matched from: Filename : /usr/bin/netstat
如您所见,“net-tools”包提供了“netstat”命令。
因此,让我们使用以下命令以 root 用户身份安装 net-tools 包 根 用户:
# dnf install net-tools
样本输出:
CentOS-8 - AppStream 1.5 kB/s | 4.3 kB 00:02
CentOS-8 - Base 4.5 kB/s | 3.8 kB 00:00
CentOS-8 - Extras 1.7 kB/s | 1.5 kB 00:00
Dependencies resolved.
==========================================================================================================================================================================
Package Architecture Version Repository Size
==========================================================================================================================================================================
Installing:
net-tools x86_64 2.0-0.51.20160912git.el8 BaseOS 323 k
Transaction Summary
==========================================================================================================================================================================
Install 1 Package
Total download size: 323 k
Installed size: 1.0 M
Is this ok [y/N]: y
Downloading Packages:
net-tools-2.0-0.51.20160912git.el8.x86_64.rpm 253 kB/s | 323 kB 00:01
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 170 kB/s | 323 kB 00:01
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : net-tools-2.0-0.51.20160912git.el8.x86_64 1/1
Running scriptlet: net-tools-2.0-0.51.20160912git.el8.x86_64 1/1
Verifying : net-tools-2.0-0.51.20160912git.el8.x86_64 1/1
Installed:
net-tools-2.0-0.51.20160912git.el8.x86_64
Complete!
现在你可以在你的 CentOS 8 系统上使用 netstat 命令了。
修复 CentOS 7 和 RHEL 7 中的“netstat command not found”错误
首先,我们应该找出哪个包提供 ‘网络统计’ 命令。
要找出答案,请运行:
$ yum provides */netstat
或者,
$ yum whatprovides */netstat
样本输出:
yum provides */netstat
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.nbrc.ac.in
* extras: mirror.nbrc.ac.in
* updates: mirror.nbrc.ac.in
net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
Repo : base
Matched from:
Filename : /bin/netstat
正如你在上面的输出中看到的,我们需要安装 网络工具 包以获取 netstat 命令。
因此,让我们使用终端中的以下命令安装 net-tools 命令:
$ sudo yum install net-tools
样本输出:
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.nbrc.ac.in
* extras: mirror.nbrc.ac.in
* updates: mirror.nbrc.ac.in
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.17.20131004git.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
========================================================================================================================================================================
Package Arch Version Repository Size
========================================================================================================================================================================
Installing:
net-tools x86_64 2.0-0.17.20131004git.el7 base 304 k
Transaction Summary
========================================================================================================================================================================
Install 1 Package
Total download size: 304 k
Installed size: 917 k
Is this ok [y/d/N]: y
Downloading packages:
net-tools-2.0-0.17.20131004git.el7.x86_64.rpm | 304 kB 00:00:05
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1
Verifying : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1
Installed:
net-tools.x86_64 0:2.0-0.17.20131004git.el7
Complete!
就是这样。 现在您可以使用“netstat”命令。
$ netstat
样本输出:
Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 server.ostechnix.com:ssh sk:54534 ESTABLISHED Active UNIX domain sockets (w/o servers) Proto RefCnt Flags Type State I-Node Path unix 2 [ ] DGRAM 10304 /run/systemd/shutdownd unix 2 [ ] DGRAM 10242 @/org/freedesktop/systemd1/notify unix 5 [ ] DGRAM 6104 /run/systemd/journal/socket unix 13 [ ] DGRAM 6106 /dev/log unix 3 [ ] STREAM CONNECTED 14013 /var/run/dbus/system_bus_socket unix 2 [ ] DGRAM 24798 unix 3 [ ] STREAM CONNECTED 17856 unix 3 [ ] STREAM CONNECTED 17874 unix 3 [ ] STREAM CONNECTED 15064 [...] unix 3 [ ] STREAM CONNECTED 17878 unix 3 [ ] STREAM CONNECTED 17832 unix 3 [ ] STREAM CONNECTED 17841 unix 3 [ ] STREAM CONNECTED 14010 /var/run/dbus/system_bus_socket unix 3 [ ] STREAM CONNECTED 14710 /var/run/dbus/system_bus_socket unix 2 [ ] DGRAM 11594 unix 3 [ ] STREAM CONNECTED 16500 /run/systemd/journal/stdout unix 3 [ ] STREAM CONNECTED 17809 unix 3 [ ] STREAM CONNECTED 17836 unix 2 [ ] DGRAM 13906 unix 3 [ ] STREAM CONNECTED 17845
希望这可以帮助。
建议阅读:
- 如何查找正在侦听特定端口的服务
- 如何在 Linux 上查找可用的网络接口
感谢您的光临!
帮助我们帮助您:
- 订阅我们的电子邮件通讯: 立即注册
- 支持 OSTechNix: 通过贝宝捐款
- 下载免费的电子书和视频: TradePub 上的 OSTechNix
- 联系我们: 红迪网 | Facebook | Twitter | 领英 | RSS订阅
祝你有美好的一天!!