Ideas in this (virtual) directory have been implemented by me or by somebody else.
Record frames
I've got a number of record sleeves that are quite attractive, and I'd like to be able to have on the wall. Since they're a standard size, I'm sure it's already occurred to someone else to sell a twelve-inch-square picture frame that you can put an empty record sleeve into.
... and yes, it has -- Firebox sell them, as do Indelible Pink (along with a number of variations on the same idea).
1541 emulator
The C64 DTV is a modern (and extremely cheap) clone of the Commodore 64 with a set of built-in games -- and keyboard and disk interfaces. To provide persistent storage and thus make it a useful C64 system, it would be neat to have a flash-based storage device that emulated a 1541 disk drive. Since this would only need a small microcontroller and a flash chip, it could probably be made small enough to fit inside the original DTV case.
Looks like Jim Brain had the same idea: his uIEC is a Compact Flash-based 1541 emulator.
Attachment warnings
If I'm sending email and I've used the word "attached" in the message, it's likely that I intend to attach a file before I send. Since in many mail clients (for instance, in Mutt) the process of editing text is separated from the menu where you can attach files, I sometimes forget to actually attach the file before sending the message. If I've said I'm going to attach a file and I try to send the message without doing so, my mail client should warn me.
Internationalising this might prove to be an interesting challenge.
post-mode implements this for Emacs, and KMail has done it for ages according to a correspondant, so I think this idea's been thoroughly done now...
A better RSS aggregator
Not much of an idea: I want an RSS aggregator with an interface like PyDS's aggregator, but without the rest of PyDS. Borrowing liberally from the PyDS code might be the easiest way to achieve this.
Implemented as rawdog. I didn't end up using the PyDS code, but I did make use of Mark Pilgrim's feedparser library, which saved a lot of work.
Aspect ratios in window managers
When resizing a video window on my desktop, I would like to know what its aspect ratio is. It'd be nice if my window manager would tell me (in "4:3" or "1 1/3:1" form), or allow me to constrain a window to 4:3 shape.
If your window manager handles size hints correctly (for instance, Openbox 3 does), MPlayer now maintains its aspect ratio correctly.
Bandwidth proxying
Suppose I'm running a webserver on a slow dialup link, and I'm serving large pages containing mostly static content with occasional dynamic sections. It's therefore possible that a site with a better connection that knows how to generate the static bits of my outgoing data can generate packets that appear to come from me with the appropriate contents, exchanging some minimal information with my machine (TCP sequencing, etc.). Effectively, this is distributing one end of a TCP connection across several hosts.
Werner Almesberger's already done essentially this as TCP connection passing.
bandwidthpie
A real-time-updating pie chart showing how much of our ADSL bandwidth each user is using.
Implemented using Perl, GD and iptables as bandwidthpie; see all.fivegeeks.net for an example of it in use.
batvise
A supervise-like tool that's a bit more flexible and didn't
need svscan (you'd start and stop it by hand) or svc (make it respond
properly to SIGTERM, SIGHUP etc., and write the supervisor's PID to a
pidfile). You could even do svscan-style logging by having, say, a
-e switch that made it redirect its child's stderr to its
stdout, and then just piping the output to another instance of
it. There's probably no need for supervise's "down" functionality --
if you don't want the child running, then don't run the supervisor. An
option to specify the delay in seconds before restarting the child
would be useful.
Implemented; see batvise. I've gone back to freedt since, to avoid the huge trees of do-very-little processes this method required.
Better Makefiles for web pages
An improved version of my Makefile system for building web pages that knows how to make HTML from plain text, fortune files, images etc., and deals with a hierachy of directories. Do in the ports style with includes and subdirs.
Implemented.
CVS to RSS, mark two
An easy way of generating an RSS feed from a CVS repository would be to
transform the output of cvs2cl --xml. This would probably
be a useful approach for my web pages, for instance.
Implemented using a Python script; offog.org has a change log on the front page now.
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