install

Additional install commands

macOS

Homebrewverified · 100%

brew install nuttcp

local Homebrew formula metadata

Linux

Alpine Linux apkverified · 92%

sudo apk add nuttcp

Alpine Linux edge package indexes · nuttcp · source: dl-cdn.alpinelinux.org

Debian aptverified · 92%

sudo apt install nuttcp

Debian stable package indexes · nuttcp · source: deb.debian.org

Fedora dnfverified · 92%

sudo dnf install nuttcp

Fedora Rawhide package metadata · nuttcp · source: dl.fedoraproject.org

Nixverified · 92%

nix profile install nixpkgs#nuttcp

nixpkgs package indexes · pkgs/by-name/nu/nuttcp/package.nix · source: api.github.com

overview

Package summary

Network performance measurement tool

Project links

Commands and aliases

nuttcp

history

Project history and usage

nuttcp is a command-line network throughput measurement tool for TCP and UDP. Its own manual places it in the lineage of ttcp and nttcp, while adding operational features such as server mode, rate limiting, multiple parallel streams, timed tests, IPv6, multicast, MSS, and TOS/DSCP support.

Project history

The official manual traces the ancestry to Mike Muuss's pre-December-1984 ttcp work at BRL, then to an SGI-enhanced nttcp, and finally to nuttcp. That lineage explains the name and the tool's deliberately plain design: move buffers across a network path and report throughput plus timing, CPU, and UDP-loss data.

Adoption history

nuttcp is niche but durable. Debian packages it as a network performance measurement tool across multiple architectures, Homebrew ships version 8.2.2, and ESnet Fasterdata documents it for high-speed UDP testing. Homebrew analytics on 2026-07-01 showed 158 installs over 365 days, which fits a specialist operations tool rather than a general developer CLI.

How it is used

Network engineers use nuttcp in transmitter/receiver mode or the recommended client/server mode to test raw TCP or UDP throughput for a chosen duration or byte count. ESnet's examples show practical high-speed UDP testing with explicit packet size, test duration, UDP mode, window size, rate/report flags, and one-second interval output.

Why package nerds care

For package maintainers, nuttcp is a classic small C networking utility: simple enough to package broadly, useful enough to keep around, and close to the metal when iperf-style testing needs a second opinion or UDP-specific behavior.

Timeline

Before 1984-12: ttcp is written by Mike Muuss at BRL, according to the nuttcp manual.
Later: SGI's nttcp improves ttcp; nuttcp then extends nttcp with server mode, rate limiting, parallel streams, and timer-based usage.
2026-07-01: Homebrew lists nuttcp 8.2.2.

Related projects

ttcp
nttcp
iperf
netperf

Sources

security posture

Risk level: blue

broad file, network, media, or database tool signal.

Risk classifier

blue risk · medium confidence · tool

Why

broad file, network, media, or database tool signal

Signals

text:network

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 13 platform targets.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`nuttcp`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version8.2.2

manager updated

local dataok

upstreamnot checked

latest detectednot detected

https://www.nuttcp.net/nuttcp/

infoNo package-manager update timestamp was available.low confidence
infoRelease/tag comparison is only available for GitHub repositories.https://www.nuttcp.net/nuttcp/none confidence

install metadata

Package metadata

Package key	brew:nuttcp
Version	8.2.2
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/nuttcp
Homepage	https://www.nuttcp.net/nuttcp/
Upstream docs	https://www.nuttcp.net/Welcome%20Page.html
License	GPL-2.0-only
Source archive	https://www.nuttcp.net/nuttcp/nuttcp-8.2.2.tar.bz2
Bottle	available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	nuttcp
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Debian apt95%

nuttcp 8.2.2.rpm-1

network performance measurement tool

https://www.nuttcp.org/

sudo apt install nuttcp

Section: net
Architecture: amd64
1 dependencies
normalized package name match
Matched by: Nuttcp

Debian stable package indexes · deb.debian.org · Debian stable package indexes: nuttcp from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Nix95%

nuttcp

nix profile install nixpkgs#nuttcp

normalized package name match
Matched by: Nuttcp

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/nu/nuttcp/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

Ubuntu apt95%

nuttcp 6.1.2-4build1

network performance measurement tool

sudo apt install nuttcp

Section: universe/net
Architecture: amd64
1 dependencies
normalized package name match
Matched by: Nuttcp

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: nuttcp from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

apk95%

nuttcp 8.2.2-r1

A network performance measurement tool

http://www.nuttcp.net

sudo apk add nuttcp

License: GPL-2.0-only
Architecture: x86_64
Source Package: nuttcp
1 dependencies
1 provides
normalized package name match
Matched by: Nuttcp

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: nuttcp from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

apk95%

nuttcp-doc 8.2.2-r1

A network performance measurement tool (documentation)

http://www.nuttcp.net

sudo apk add nuttcp-doc

License: GPL-2.0-only
Architecture: x86_64
Source Package: nuttcp
normalized package name match
Matched by: Nuttcp

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: nuttcp-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

dnf95%

nuttcp 8.2.2-16.fc44

Tool for testing TCP connections

http://nuttcp.net/

sudo dnf install nuttcp

License: GPL-2.0-or-later
Category: Unspecified
Architecture: x86_64
Source Package: nuttcp
4 dependencies
1 provides
normalized package name match
Matched by: Nuttcp

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: nuttcp from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/nuttcp.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install nuttcp with Homebrew, apk, apt, dnf, Nix