Project Summary
The GNU Daemon Shepherd or GNU Shepherd, formerly known as GNU dmd, is a service manager that looks after the herd of system services. It provides a replacement for the service-managing capabilities of SysV-init (or any other init) with a both powerful and beautiful dependency-based system with a convenient interface. It is intended for use on GNU/Hurd, but it is supposed to work on every POSIX-like system where Guile is available. In particular, it is used as PID 1 by the Guix System Distribution (GuixSD).
In a Nutshell, GNU Shepherd...
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has a well established, mature codebase
maintained by a average size development team
with stable Y-O-Y commits -
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took an estimated 2 years of effort (COCOMO model)
starting with its first commit in March, 2003
ending with its most recent commit 7 months ago
Quick Reference
GNU General Public License v3.0 or later
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Use Patent Claims
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryOct 31 2025 — Nov 30 2025
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12 Month SummaryNov 30 2024 — Nov 30 2025
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