install

Additional install commands

macOS

Homebrewverified · 100%

brew install mon

local Homebrew formula metadata

Linux

Debian aptverified · 92%

sudo apt install mon

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

Fedora dnfverified · 92%

sudo dnf install mon

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

overview

Package summary

Monitor hosts/services/whatever and alert about problems

Project links

Commands and aliases

mon

history

Project history and usage

mon is TJ Holowaychuk's small C process monitor, framed by its README as a reaction against heavier monitoring tools and their configuration languages. The project deliberately keeps the model simple: run a command, restart it on failure, optionally daemonize it, and call user-supplied scripts on restart or final error.

Project history

The tool is used more like a tiny supervisor than a full metrics system. Its README shows one mon instance per process, shell scripts as configuration, PID files and log prefixes for multiple instances, and companion tools such as mongroup for managing groups of mon processes. Homebrew packages it as a lightweight system utility for monitoring hosts, services, or arbitrary commands and alerting about problems.

How it is used

Because public sources for this particular mon package are sparse outside the upstream README and package metadata, its project history is best treated as a short package note rather than a detailed adoption narrative.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

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
`mon`	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 version1.2.3

manager updated

local dataok

upstreamcurrent

latest detected1.2.3

https://github.com/tj/mon

infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package key	brew:mon
Version	1.2.3
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/mon
Homepage	https://github.com/tj/mon
Repository	https://github.com/tj/mon
Upstream docs	https://github.com/tj/mon#readme
License	MIT
Source archive	https://github.com/tj/mon/archive/refs/tags/1.2.3.tar.gz
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	mon
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%

mon 1.4.1-2

monitor hosts/services/whatever and alert about problems

https://doc.coker.com.au/projects/etbe-mon/

sudo apt install mon

Section: admin
Architecture: amd64
Source Package: etbemon
4 dependencies
22 optional deps
normalized package name match
Matched by: Mon

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

Ubuntu apt95%

mon 1.3.8-1build3

monitor hosts/services/whatever and alert about problems

https://doc.coker.com.au/projects/etbe-mon/

sudo apt install mon

Section: universe/admin
Architecture: amd64
Source Package: etbemon
5 dependencies
22 optional deps
normalized package name match
Matched by: Mon

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

dnf95%

mon 1.2.0-46.fc45

General-purpose resource monitoring system

http://www.kernel.org/software/mon/

sudo dnf install mon

License: GPL-2.0-or-later
Category: Unspecified
Architecture: x86_64
Source Package: mon
12 dependencies
2 provides
normalized package name match
Matched by: Mon

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: mon 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/mon.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 mon with Homebrew, apt, dnf