On Fri, 2007-06-15 at 11:58 -0400, Alan Cox wrote:

On Fri, Jun 15, 2007 at 11:44:55AM -0400, Havoc Pennington wrote:

...

The Mugshot client daemon does this itself by installing a file called "version" with the package version, and if said file changes it restarts itself.

init stats its own binary and librarie (or used to)

But that exposes you to a race condition as you don't know when all the files have been upgraded and it requires inefficient periodic polling.