Certo, the certificate expiry watchdog

Certo checks a hosts' certificate (at the moment only via HTTP1.1) for impending expiry, and reports its findings in a legible manner (optionally serialised as JSON).

Usage

``` Usage: certo [OPTIONS] ...

Arguments: ... [List of] Hosts to check the certificates of

Options: -d Warn about near expiration if within this number of days of the cert's notAfter [default: 5] -c Custom root PEM certificates to use for verification. Can be either a certificate, or a collection of concatenated PEM certs (certificate bundle) -F, --force-system-root-store Force use of the system-installed root certificate store if default behaviour is overriden by use of custom root certificates -j, --json Output results in json format for further processing -h, --help Print help information -V, --version Print version information ```