loopkid: Category Mac OS X

forcing tidy to repair broken html

Stefan — Fri, 27 Jan 2012 21:08:00 +0100

$ curl -sL http://bit.ly/xpkkso | tidy 2>&1 | sed -n '105,106p'
This document has errors that must be fixed before
using HTML Tidy to generate a tidied up version.

$ tidy -help-config | grep force
force-output    Boolean    y/n, yes/no, t/f, true/false, 1/0

$ tidy -show-config | grep force-output
force-output    Boolean    no

$ curl -sL http://bit.ly/xpkkso | tidy --force-output true \
2>/dev/null | head -n 5
<!DOCTYPE html>
<html b:version='2' class='v2' dir='ltr'>
<head>
<meta name="generator" content=
"HTML Tidy for Mac OS X (vers 25 March 2009), see www.w3.org">

safariomnibar port for powerpc

Stefan — Fri, 13 Jan 2012 03:39:00 +0100

I did a port of Olivier Poitrey’s SafariOmnibar for Macs with PowerPC processor running Safari 5.0.6 on Mac OS 10.5.8. Go ahead and grab the current version over at Github.

sync 28c3 conference torrents

Stefan — Thu, 29 Dec 2011 19:35:00 +0100

Um die Server des 28C3 nicht unnötig zu belasten ziehe ich mir zwar nur die Torrent-Dateien der Mitschnitte, aber selbst das kann teilweise zu einem Geduldsspiel werden. Wie ich feststellen musste bekommt man bei jeder Verbindung zu mirror.fem-net.de einen anderen Mirror zugewiesen. Manche davon funktionieren gut, manche weniger gut und manche garnicht.

Insgesamt scheint es fünf Stück zu geben:

$ dig +short mirror.fem-net.de |\
xargs -n 1 dig +short -x | sed 's/.$//'
mirror.netcologne.de
bork.informatik.uni-erlangen.de
ramses.wh2.tu-dresden.de
ftp.uni-kl.de
mirror.selfnet.de

Bei meinen Versuchen erwiesen sich die Server der Uni Kaiserlautern und das Wohnheimnetzwerk Stuttgart (“Selfnet”) als recht performant. Mithilfe von Fuse4X und CurlFtpFS synchronisiere ich nun regelmäßig die Torrent-Dateien der Video-Mitschnitte.

$ sudo port install fuse4x curlftpfs
$ mkdir /Volumes/28C3
$ curlftpfs ftp://mirror.selfnet.de/CCC/28C3/mp4-h264-HQ/ \
/Volumes/28C3
$ rsync -hav --include '*/' --include '*.torrent' \
--exclude '*' /Volumes/28C3 ~/Desktop

Nachtrag: Die RWTH Aachen bietet auf ihrem inoffiziellem Mirror auch rsync an.

$ rsync -hav --include '*/' --include '*.torrent' --exclude '*'
rsync://ftp.halifax.rwth-aachen.de/ccc/28C3/mp4-h264-HQ/ ~/Desktop

Nachtrag: Mittlerweile gibt es auch einen Gesamttorrent (~48 GB).

vox for mac os x website moved

Stefan — Sat, 15 Oct 2011 13:24:00 +0200

The minimalist Mac OS X audio player of Alessio Nonni has moved. Check out the new Vox website for a Lion compatible version. If you enjoy the app don’t hesitate to make a donation to support ~~the suffering italian economy~~ a talented developer!

really empty the safari cache

Stefan — Tue, 11 Oct 2011 09:24:00 +0200

After telling Safari to empty the cache I wondered If Safari actually did what I told it.

$ du -sh ~/Library/Caches/com.apple.safari
629M    /Users/stefan/Library/Caches/com.apple.safari

Hm, 626 megabyte don’t look like obedience to me. Let’s see what’s in there.

$ du -sh ~/Library/Caches/com.apple.safari/*
173M    /Users/stefan/Library/Caches/com.apple.safari/Cache.db
5.6M    /Users/stefan/Library/Caches/com.apple.safari/Extensions
450M    /Users/stefan/Library/Caches/com.apple.safari/Webpage Previews
 64K    /Users/stefan/Library/Caches/com.apple.safari/com.apple.opencl

450 megabyte of “Webpage Previews”?

$ find ~/Library/Caches/com.apple.safari/Webpage\ Previews -type f \
| sed -E 's/.*\.([^\.]*)/\1/' | sort | uniq -c
7016 jpeg
 400 png

No wonder we need gigabyte sized hard disks today. Let’s delete the crap altogether.

$ rm -r ~/Library/Caches/com.apple.safari

And let’s make sure it doesn’t come back (works in Safari 5.0.3).

$ defaults write com.apple.Safari DebugSnapshotsUpdatePolicy -int 2

So, what have we gained after restarting Safari?

$ du -sh ~/Library/Caches/com.apple.safari | awk '{print $1}'
3.6M

Nice, especially in times of undersized solid state disks.

downgrade safari 5.1 to 5.0.x on lion

Stefan — Tue, 11 Oct 2011 07:11:00 +0200

If you want to downgrade Safari 5.1 to Safari 5.0.x on Lion you can download Safari 5.0.3 from the original Apple servers and extract just the Browser with Pacifist. The installation image is called Safari5.0.3SnowLeopard.dmg but it works just fine on Lion. Have fun!

recursive chmod and chown on files

Stefan — Fri, 07 Oct 2011 21:47:00 +0200

If you want to recursively apply permissions to files it’s best to use GNU parallel because it handles obscure filenames robustly:

find directory -type f | parallel -m chmod mode

If you want to change ownership of the files, you can use a root subshell:

sudo bash -c "find directory -type f | parallel -m chown user:group"

floating point bash calculator

Stefan — Fri, 30 Sep 2011 04:52:00 +0200

$ alias calc='bash -c '\''set -f; echo "scale=3;$0 $@" | bc -l '\'
$ calc 4/3
1.333

tell lions resume feature to go to hell

Stefan — Wed, 28 Sep 2011 02:11:00 +0200

rm -r ~/Library/Saved\ Application\ State/*
chmod -w ~/Library/Saved\ Application\ State

make ard work with dynamic dns

Stefan — Thu, 22 Sep 2011 14:11:00 +0200

With its default settings Apple Remote Desktop doesn’t play well with dynamic DNS services. If you add a domain with a dynamic IP address it retrieves the IP address only once and if the IP address changes, the connect fails. A temporary workaround is to remove the IP address from the computer information window or to remove and readd the computer, but that certainly sucks for the long term.

A permanent solution is to disable reverse IP lookups:

defaults write com.apple.RemoteDesktop \
DisableReverseIPLookup -bool yes

Now Apple Remote Desktop will update the IPs upon launch.