On  1 Jan 2006, Florian Weimer wrote:

> What about hard errors, such as a wrong command line argument, or a
> problem downloading the vulnerability information?

Nagios plugins can only return 4 different codes:

 * 0 means OK
 * 1 means warning
 * 2 means critical
 * -1 means unknown

debsecan should return -1 (often seen as 255) in case of command line
argument, or a problem downloading the vulnerability information, 0 if
no package is vulnerable and 2 if one or more packages are vulnerable.
-- 
Cyril Bouthors

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