• Activated Windows so it would stop complaining
• Installed a free antivirus (Avast)
• Downloaded WSUS Offline and installed all updates
• Installed Google Chrome
• Installed the latest versions of Adobe Flash and Adobe Air
• Changed the storage type from IDE to Virtio (much much faster!). It took some effort to get Red Hat’s virtio storage driver to work: in the end the problem was driver signing, and I needed to use the ”Driver Signature Enforcement Overrider”. Plus I had to use Virtual CloneDrive in order to mount the .iso file with the drivers
• Used WinDirStat to get a picture of disk usage, disabled the pagefile and hibernating to save space
• Removed the (virtual) sound card, as it was messing with the host’s sound

What it does is basically to break the well-established paradigm of “one-account-one-password”. Instead, one account has multiple passwords, which are called “application-specific passwords“. The idea is that, e.g. if you setup to read your Gmail on your smartphone and then you lose it, you can revoke that password without having to change the password you use to read Gmail on your browser! These passwords are 16 characters long.

In addition to the application-specific passwords, you also have one-time passwords (called “verification codes“) that are used (in addition to your normal password) for signing into your account using a browser. These codes are 6 digits long. You can have them sent to you by SMS, or you can install the “Google Authenticator” app on your smartphone to have the verification codes generated by your phone each time.

Google 2-step verification:
http://support.google.com/accounts/bin/static.py?hl=en&topic=1056284&guide=1056283&page=guide.cs

Google Authenticator, the app that turns your smartphone into a token:
http://support.google.com/accounts/bin/answer.py?hl=en&answer=1066447

Create a text file containing the list of files you want to remove, e.g. like this:

locate abcd | /bin/grep /usr/local > filelist.txt

Inspect filelist.txt carefully to make sure you’re not removing anything you want to keep. Then remove those files like this:

for i in `cat filelist.txt`; do sudo rm -r $i; done

export CLICOLOR=1
export LSCOLORS=ExFxCxDxBxegedabagacad
PS1='\[33[;32m\]\u@\h\[33[m\]:\[33[;34m\]\w\[33[m\]\$ '

The reason is that Apple’s Python doesn’t “see” the modules installed through MacPorts; you need to use MacPorts’s Python.

To see a list of available Python interpreters, run port select python. Then to choose e.g. MacPorts’s Python 2.6, run sudo port select python python26

After changing some configuration option, instead of restarting Apache (sudo service apache2 restart), try reloading instead (sudo service apache2 reload).

To add another “subdir” under your domain (i.e. http://mydomain/newsubdir/), create the file /etc/apache2/sites-available/newsubdir:

<VirtualHost *:80>
    Options FollowSymLinks MultiViews
    Alias /newsubdir/ "/path/to/content/"
</VirtualHost>

Then enable the site with sudo a2ensite newsubdir and then reload the Apache configuration as described above.

File "/usr/lib/pymodules/python2.7/matplotlib/font_manager.py", line 1306, in findfont
   if not os.path.exists(font):
 File "/usr/lib/python2.7/genericpath.py", line 18, in exists
   os.stat(path)
 TypeError: coercing to Unicode: need string or buffer, dict found

Through this thread I was able to resolve the issue by clearing matplotlib’s font cache: rm ~/.matplotlib/fontList.cache

The output of “uname -a” on my iPhone is:

Darwin <device name> 11.0.0 Darwin Kernel Version 11.0.0: Wed Mar 30 18:51:10 PDT 2011; root:xnu-1735.46~10/RELEASE_ARM_S5L8930X iPhone3,1 arm N90AP Darwin

USB cable

When connected to a Ubuntu machine through the USB cable, two locations will be mounted over the AFC (Apple File Connection) protocol. The two mount points will be titled “<device name>” and “Documents on <device name>“. Ubuntu 11.04 will offer (in Nautilus) to open the first mount point with the Banshee Media Player and with the Shotwell Photo Manager.

SSH

On a jailbroken iPhone you can install OpenSSH. The default username is “mobile” and the default password (on ALL iPhones) is “alpine”. Change that immediately with “passwd”. Note your iPhone’s IP address on the WiFi interface (you can find that under Settings, Wi-Fi, then click on the blue right arrow; if you’re doing this at home, you might want to reserve a fixed IP address for your iPhone on your router).

Filesystem

The flash storage is divided into to HFS-formatted partitions; one is mounted under / (root) and the other under /private/var. Only the second one is journaled.

A few soft links exist at root level:

• /var -> /private/var
• /etc -> /private/etc
• /User -> /var/mobile
• /tmp -> /private/var/tmp
• /Applications -> /var/stash/Applications.pwn

Your home directory will be “/var/mobile”. The first mount point described above (“<device name>”) is actually “/var/mobile/Media”

See also

• http://theiphonewiki.com/
• http://azitech.wordpress.com/iphone-3gs/

Reference: http://www.gnu.org/software/automake/manual/automake.html#Clean

Instead, you can do it on your machine, using youtube-dl (written in Python). Download the script and run it with the --extract-audio command-line option. You’ll need also ffmpeg, lame and libavcodec-extra-52