Silk Tree propagates /etc/passwd and /etc/group files from a master to a list of hosts via SSH. The sending and receiving ends connect to each other as a non-root user. A read-only sudo program on the receiver's side makes the final modifications in /etc. Many checks are made to ensure reliable authorization updates. ACLs are used to enforce a simple security policy. Differences between old and new versions are shown. Two small scripts are included for exporting LDAP users and groups.

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