# Install mon with Homebrew, apt, dnf

Monitor hosts/services/whatever and alert about problems. Version 1.2.3 via Homebrew; verified from local package data. Also installable with debian: sudo apt install mon.

## Install

```sh
sudo av install brew:mon
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install mon
```

  Evidence: local Homebrew formula metadata

### Linux

- Debian apt (92%):

```sh
sudo apt install mon
```

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

- dnf (92%):

```sh
sudo dnf install mon
```

  Evidence: Fedora Rawhide package metadata: mon from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst

## Package facts

- **Package key:** brew:mon
- **Package manager:** Homebrew
- **Version:** 1.2.3
- **Source summary:** Monitor hosts/services/whatever and alert about problems
- **Homepage:** <https://github.com/tj/mon>
- **Repository:** <https://github.com/tj/mon>
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- mon (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 1.2.3
## 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

- <https://formulae.brew.sh/formula/mon>
- <https://github.com/tj/mon>


## Security Notes

narrow executable package without higher-risk signals.

- **Geiger risk:** green / low
- narrow executable package without higher-risk signals

## Other Package-Manager Records

- Debian apt - mon - 1.4.1-2: normalized package name match | Debian stable package indexes: mon from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | monitor hosts/services/whatever and alert about problems | https://doc.coker.com.au/projects/etbe-mon/
- Ubuntu apt - mon - 1.3.8-1build3: normalized package name match | Ubuntu 24.04 LTS package indexes: mon from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | monitor hosts/services/whatever and alert about problems | https://doc.coker.com.au/projects/etbe-mon/
- dnf - mon - 1.2.0-47.fc45: normalized package name match | Fedora Rawhide package metadata: mon from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | General-purpose resource monitoring system | http://www.kernel.org/software/mon/


## Combined YAML source

View the package source record on GitHub. [combined/mon.yml](https://github.com/mxcl/pkgdb/blob/main/combined/mon.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph