Posts Tagged "technology"

iPhone 3G Acquired

I've just purchased an iPhone 3G. I'll now make a few posts about my ordering experience.

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Firefox 3

So, I got bored this weekend and installed Firefox 3 (beta 5, if it matters to you). It works pretty well -- it's certainly faster than Firefox 2. However, there are a couple of annoying bugs that I'd like to post the solutions to for posterity:

If you use a dark theme (like I do), then many textarea and input form elements will be unusable because they will have a dark foreground color and a light background color. The solution to this is to add a userContent.css to ~/.mozilla/firefox/ /chrome. There are lots of guides on the Internet for …

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*nix Tip of the Day: sudo

I've mentioned sudo in these tips before. It's a neat little utility for executing commands as somebody else. Well, today I bring you a handy guide I found on using sudo. I already knew most of the stuff, but some of it was new, and it looks pretty good as a starter for new users. So enjoy this article on sudo basics by A.P. Lawrence.

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Debian OpenSSL

Sorry readers, no *nix Tip of the Day today. Just a brief word about the recent Debian OpenSSL vulnerability.

I'm sure you've heard about Debian's OpenSSL "Disaster". The short of it is that while fixing a questionable line in the OpenSSL/OpenSSH key generator, the Debian maintainer accidentally removed most of its entropy generation ability. Debian users with OpenSSL and/or OpenSSH keys should go regenerate them now. I'll wait.

Anyhow, the other interesting thing I wanted to post about was this. It's some interesting math showing why you shouldn't be using DSA keys anyway.

Oh yeah, and I'm done …

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*nix Tip of the Day: tee

tee is a handy little utility that probably all of you know about, but I just found this year. Consider the following scenario: you're maintaining your Gentoo Linux system and you need to add a line to /etc/portage/package.unmask. So you type

sudo echo "sys-kernel/gentoo-sources" >> /etc/portage/package.unmask

right? Nope! The way shell parsing works, that turns into

(sudo echo "sys-kernel/gentoo-sources") >> /etc/portage/package.unmask

which is most certainly not what you want, since you probably don't have permissions to /etc/portage/package.unmask. The solution is the tee utility. It would be invoked like …

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*nix Tip of the Day: rxvt-unicode and terminfo

An important part of a *nix system is a good terminal emulator. For some, this means the classic xterm. The same xterm that's happy to use 7 MiB of resident memory for each instance. Or perhaps you run a full DE like Gnome and are happy to use gnome-terminal and enjoy 19 MiB of resident. Personally, I use rxvt-unicode (urxvt). It's a very lightweight version of rxvt which has neato features like full Unicode support and a daemon mode that lets you pool multiple instances. For example, my urxvtd processs is using 41 MiB of resident, but hosting 9 urxvtc …

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