This section is from the "Version Control with Subversion" book, by Ben Collins-Sussman, Brian W. Fitzpatrick and C. Michael Pilato. Also available from Amazon: Version Control with Subversion.
post-unlock — Notification of a successful path unlock.
The post-unlock hook runs after one or more paths has been unlocked. It is typically used to send email notification of the unlock event.
The output from and exit value returned by, the post-unlock hook program are ignored.