community.aegirproject.org

While working on the security enhancements, I stumbled upon a few fundamental UNIX limitations with groups.

Group name length

• NIS: 8 characters (source)
• HPUX: 8 characters, 16 starting from HPUX 10 (source, source)
• AIX: 8 characters, 255 for AIX 5.3 and above (source)
• Debian: 16 characters (source, defined in shadow at compile-time)
• Redhat: 16 characters, 32 starting from 2005 (source, source, source)
• Active Directory: 11 or 64 characters (source unclear)

Group membership limits