Stripping tags from ogg Vorbis files

I have a bunch of free Ogg Vorbis audio files that I’ve downloaded from Kahvi.org. They’re great! But recently they’ve been including cover art within the files, which breaks Windows Media Player (it can’t handle the very long tags of binhex-coded JPGs).

Since I rather like WMP’s integration in windows (keyboard shortcuts), and Amarok isn’t quite ready for win32, I thought I’d find a way to strip the troublesome tags from the data files rather than change to another player.

Here’s a quick-and-dirty shell hack to remove the tags from the files and get them playable by daft players such as Windows Media Player

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Essentials to make Windows almost bareable

Okay, so I hate working in Windows, but on my employer’s equipment at least, I must live with it. After having had this machine replaced twice (faulty Dell hardware) and rebuilt more times than I can remember (Windows BSODs), for a total of at least 3 system migrations this past year, I thought I’d better keep a list of what free software to install on top of Windows, and what adjustments to make, so that at least I don’t feel like I’m wearing a straight jacket. Here goes:

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Remote desktop access on SuSE: Cygwin, X, XDMCP and SSH? Nope. FreeNX!

This post is also available at my personal web site: http://milosophical.me/blog/2007/03/22/remote-desktop-acces-suse-cygwin-x-and-xdmcp.html


MJL20080827 — Update:  I Just realised that this is one of my top-visited pages and it’s a totally disorganised and incongruent pile of… What’s worse is, I’ve never updated it since the promised update back in March 2007!

Let me clear things up (and save you wading through the whole article): If you want remote access to your openSUSE desktop from a networked thin client, then forget about X11, XDMCP, VNC or tunneling X through SSH. Use the NX protocol. You’ll need to do the following:

  1. Install FreeNX on your openSUSE host. Some (slightly outdated, but usable) instructions are in Chapter 9 of the openSUSE 10.2 Reference manual. If you’re using openSUSE 11.0 or newer, get the latest FreeNX package from the openSUSE Build Service (there are one-click install buttons)
  2. Install an NX client on your remote terminal(s). Nomachine has free NX clients for Linux, Mac, Windows and Solaris (even some experimental ones for PlayStation 2 and Zaurus!). If your remote terminal is running openSUSE, you could alternatively get an open-source NX client from the build service (or ask yourself: I’m running X locally, so why don’t I just use good ole SSH and X11?)
  3. Configure your NX client to connect to the openSUSE host, then log in and enjoy!

The upshot: I’ve done this with a FreeNX server and Nomachine’s NX client for Windows XP, and it all “just works”, except maybe for some font issues with older X clients like emacs (install extra font packages from nomachine to fix that), and some transparency effect issues I noticed in kwin4, probably to do with X11 extensions missing in the NX client. Not a big deal.

Read the rest of this article for the boring background and laughable false-starts in my quest for remote desktops in X… <blush/>

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Finding DLLs used by a Cygwin program

This post is also available at my personal web site: http://milosophical.me/blog/2007/03/09/finding-dlls-used-by-a-cygwin-program.html


I don’t know how many other people get this issue, but it comes up at my work a bit: Some co-worker asks me if I know of a tool to do such-and-such, and invariably I think “well, that’s easy to do on Unix, but on Windows…”.

Then I remember Cygwin, and quickly find a Cygwin utility that does it, or can be scripted to do it with a small amount of work. So then co-worker asks if they can have a copy of this utility, and of course Cygwin is Free, so I say “sure, go download from www.cygwin.com.” Then they say, “yeah, but I don’t want to install all of Cygwin, can’t you just give me that one program?”

Well, the Cygwin command-line tools can be run from a Windows CMD.EXE shell, so this is quite possible to do. However, they all require the Cygwin POSIX layer, which at a minimum means I should also give them cygwin1.dll. But what other DLLs might the program use?

MJL2008-09-10T14:37+1000 Update: since this page gets a lot of hits, here’s the quick answer: use cygcheck, i.e:

cygcheck grep

Find it under Happy hacker discovery #2. Keep reading if you’re bored…

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Setting up multiple Java VMs under Cygwin

This post is also available at my personal web site: http://milosophical.me/blog/2007/03/09/setting-up-multiple-java-vms-under-cygwin.html


It is useful to have different versions of the JVM installed, for a number of reasons:

  • Different optimisation features from different JVM implementations
  • Different language features from different JVM versions
  • Java classes compiled with “Tiger” won’t run in “Mantis”…

It is also useful to be able to quickly switch between installed JREs/JDKs depending on the task at hand.

If I’m hacking in Linux, the JPackage project provides a much nicer solution to this problem, and the Linux distro’ I’m using (SUSE 10.0) uses JPackage. It’d be nice if there was an update-alternatives for Cygwin, but since there isn’t I’ve come up with this hack.

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