Jack Meter is a basic console based DPM (Digital Peak Meter) for JACK. The author wrote it for quickly checking remote signal levels, without having to run X11 to use a pretty graphical meter such as meterbridge. Note: the package is called jackmeter, but the actual binary is called jack_meter (with underscore). This package uses POSIX filesystem capabilities to execute with elevated privileges (required for realtime audio processing). This may be considered a security/stability risk. Please read http://www.slackbuilds.org/caps/ for more information. To disable capabilities, pass SETCAP=no to the script.