NAME

       Spectre - manual page for Spectre and Meltdown mitigation detection tool v0.37

DESCRIPTION

       Spectre and Meltdown mitigation detection tool v0.37

              Usage:

       Live mode:
              spectre-meltdown-checker [options] [--live]

              Offline mode: spectre-meltdown-checker [options] [--kernel <kernel_file>] [--config
              <kernel_config>] [--map <kernel_map_file>]

              Modes:

              Two modes are available.

              First mode is the "live" mode (default), it does its best to find information about
              the  currently  running  kernel.   To  run  under  this mode, just start the script
              without any option (you can also use --live explicitly)

              Second mode is the "offline" mode, where you  can  inspect  a  non-running  kernel.
              You'll  need  to  specify  the  location  of the kernel file, config and System.map
              files:

       --kernel kernel_file
              specify a (possibly compressed) Linux or BSD kernel file

       --config kernel_config
              specify a kernel config file (Linux only)

       --map kernel_map_file
              specify a kernel System.map file (Linux only)

              Options:

       --no-color
              don't use color codes

       --verbose, -v
              increase verbosity level, possibly several times

       --no-explain
              don't produce a human-readable  explanation  of  actions  to  take  to  mitigate  a
              vulnerability

       --paranoid
              require IBPB to deem Variant 2 as mitigated

       --no-sysfs
              don't use the /sys interface even if present [Linux]

       --sysfs-only
              only use the /sys interface, don't run our own checks [Linux]

       --coreos
              special mode for CoreOS (use an ephemeral toolbox to inspect kernel) [Linux]

       --arch-prefix PREFIX
              specify  a  prefix  for  cross-inspecting a kernel of a different arch, for example
              "aarch64-linux-gnu-", so that invoked  tools  will  be  prefixed  with  this  (i.e.
              aarch64-linux-gnu-objdump)

       --batch text
              produce machine readable output, this is the default if --batch is specified alone

       --batch json
              produce JSON output formatted for Puppet, Ansible, Chef...

       --batch nrpe
              produce machine readable output formatted for NRPE

       --batch prometheus
              produce output for consumption by prometheus-node-exporter

       --variant [1,2,3]
              specify which variant you'd like to check, by default all variants are checked, can
              be specified multiple times (e.g. --variant 2 --variant 3)

       --hw-only
              only check for CPU information, don't check for any variant

       --no-hw
              skip CPU information and checks, if you're inspecting a kernel not  to  be  run  on
              this host

              Return codes:

              0 (not vulnerable), 2 (vulnerable), 3 (unknown), 255 (error)

              IMPORTANT:  A false sense of security is worse than no security at all.  Please use
              the --disclaimer option to understand exactly what this script does.

SEE ALSO

       The full documentation for Spectre is maintained as a Texinfo manual.   If  the  info  and
       Spectre programs are properly installed at your site, the command

              info Spectre

       should give you access to the complete manual.

Spectre and Meltdown mitigation detection toApril.2018                                 SPECTRE(1)