Good skills.
It has never occurred to me to do that but it is actually quite an obvious thing to do when you "know" that everything is a file.
Any idea what the visual equivalent would be?
It has never occurred to me to do that but it is actually quite an obvious thing to do when you "know" that everything is a file.
Any idea what the visual equivalent would be?
Perhaps:
head -c800 /dev/urandom > /dev/tty
Or:
mplayer -demuxer rawvideo -rawvideo w=80:h=60 /dev/urandom
Change that to w=720 h=576 (for pal countries) and you can relive the glory days of analog TV static. Except not - mey memory seems to tell me it's more colourful. I guess it's to do with the limited chroma resolution in pal?
Analog color television color information is sent "out of band" from the point of view of black-and-white television (as a sideband frequency, with neat analog trickery to cancel out its effect on main signal). Color TV is backwards compatible. It's unlikely that random input happens to look like meaningful properly encoded color information, so television static is largely black and white.
mplayer -vf eq2=1:1:0:0.6 -demuxer rawvideo -rawvideo pal /dev/urandom