stylish for stackexchange

removes annoying cookies usage notice (which I have them blocked with CookieMonster anyway):

@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("stackexchange.com") {
#js-gdpr-consent-banner
  { display: none !important; }
}

ffmpeg: converting m4a to mp3 script

to be able to do this, ffmpeg must be compiled with mp3 support.

#!/bin/bash
mkdir mp3
for file in *.m4a
   do ffmpeg -i "${file}" -vn -ar 44100 -ac 2 -ab 128k -f mp3 mp3/"${file/%m4a/mp3}"
done

"unable to un/install on windows" error

a quick list of things to check:

MSIEXEC /UNREGISTER
MSIEXEC /REGSERVER

or

HKEY_LOCAL_MACHINE \Software\Microsoft\Windows\CurrentVersion\Installer\InProgress   

or

HKEY_LOCAL_MACHINE \System\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations


HKEY_LOCAL_MACHINE \Software\Microsoft\Windows\CurrentVersion\Installer

zeroing a disk on linux using DD

WARNING: if you don't really understand what are you doing (even if you THINK you are), then start learning/reading first or asking someone who really understands linux BEFORE doing something stupid like erasing a wrong disk by mistake.

if you need to wipe the content of a hard disk (REPLACE /dev/sda with the appropiate device !):

dd if=/dev/zero of=/dev/sda bs=1M 

last parameter (block size) makes the process a lot faster