commandlinefu.com is the place to record those command-line gems that you return to again and again.
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Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:
First column is number of photos, second column is the focal length.
Maybe it could work for any music player if you change "audacious2" with the string you see in `ps aux` for your player. Needs testing in different systems.
Turns off the bluetooth hardware module. To turn it back on use `rfkill unblock bluetooth`. Works in Ubuntu, probably in other distros as well. I don't know if you need some special user permission to do this. It worked for me out of the box.
Checks for PC samba name and workgroup. Works fine for Windows hosts and Linux/UNIX PCs running Samba.
-d Draw the filename at the top-left of the image
-D 1 - delay 1 second between changing slides
This command will show images in subdirectories as well.
mplayer -vc null -vo null -ao pcm Firefly\ ep\ 10.avi -ss 195 -endpos 246
Will create file audiodump.wav with audio from second 195 to second 246 (the opnening theme).
-s must be a valid resolution. You can get a list of valid (and supported) resolutions via `xrandr`.
Assuming only VIM has *~ files in your current dir. If you have usefull data in a file named in the *~ pattern, DO NOT RUN this command!