How to Install netstat Command in Linux


How to Install netstat Command in Linux

The package that contains netstat is called net-tools. On modern systems, the netstat utility comes pre-installed and there’s no need to install it.

On older systems, however, you are likely to bump into an error when you run the netstat command.

bash: netstat: command not found

Therefore, to install netstat on Linux distributions, run the command.

$ sudo apt install net-tools         [On Debian, Ubuntu and Mint]
$ sudo yum install net-tools         [On RHEL/CentOS/Fedora and Rocky/AlmaLinux]
$ sudo emerge -a sys-apps/net-tools  [On Gentoo Linux]
$ sudo apk add net-tools            [On Alpine Linux]
$ sudo pacman -S net-tools           [On Arch Linux]
$ sudo zypper install net-tools      [On OpenSUSE]    

Once installed, run the command below to check the version of netstat installed.

# netstat -v

How to Use netstat Command in Linux

You can invoke the netstat command on any of the Linux distributions to get different statistics on your network.

1. Viewing the Network Routing Table

You use the -r flag to show the network routing table to get something similar to the output below.

# netstat -nr
List Network Routing Table
List Network Routing Table

The -n option forces netstat to print addresses separated by dots instead of using symbolic network names. The option is useful for avoiding address lookups over a network.

2. Display Network Interface Statistics

Use the -i flag to get an output of statistics of a network interface that is configured. The -a option prints all present interfaces in the kernel.

# netstat -ai
List Network Interface Statistics
List Network Interface Statistics

3. Show Network Connections

The netstat command utility supports options that display active or passive sockets using the options -t-n, and -a. The flags show RAW, UDP, TCP, or UNIX connection sockets. Adding the -a option, it will sow sockets ready for connection.

# netstat -ant
List Network Connections
List Network Connections

4. Show Network Services

To list services, their current state, and their corresponding ports, run the command.

# netstat -pnltu
List Network Services
List Network Services

In this article, we shed light on how you can install the netstat command and how it is used to check a wide array of network statistics.

It’s also important to point out that netstat has been deprecated and instead, ss utility has taken its place in displaying more refined network statistics.

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