As will "pzapit -c" on the console/telnet:
[Not all the below options appear to work - but some can be very useful.]
/var # pzapit -h
Usage:
pzapit <options>
options:
-ra switch to radio mode (applies to all other commands)
<bouquet nr> list bouquet channels
<bouquet> <channel> zap by bouquet and channel nr.
-zi <channelid> zap by channel ID
-n <channel-name> zap by channel name
-gi get current channel ID
-gm get current TV/Radio mode
-dt <type> set DiSEqC type
-dr <count> set DiSEqC repeats
-re toggle record mode
-p toggle playback
-a <audio-number> change audio track
--getpids get PIDs
-c reload channel bouquets
-sb save bouquets
-sbo save bouquets including bouquet 'others'
-sh show satellites
-se <satmask> <diseqc order> select satellites
-st start transponderscan
-mute mute audio
-unmute unmute audio
-vol <0..64> set volume
-rn register neutrino as event client
-kill shutdown zapit
-esb enter standby
-lsb leave standby
--ntsc switch to NTSC mode
--pal switch to PAL mode
-m <cmdtype> <addr> <cmd> <number or params> <param1> <param2>
send DiSEqC 1.2 motor command
those require the aviaEXT driver:
--iecon activate IEC
--iecoff deactivate IEC
--iecstate get IEC state (0=off, 1=on)
--pes set decoder to PES mode
--spts set decoder to SPTS mode
--decmode get decoder mode (0=PES, 1=SPTS)