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     Pig: set default parallel

PARALLEL recommendation is 0.95 or 1.75 * (nodes * available reduce slots per machine).

Browser Opera: Activating ActiveX Controls
$('object').each( function () { $(this).html($(this).html());  } );

Opera, IE and "<li>"

float left (and object at left) --> <ul style="margin-left: 250px;">

Drupal Galleria module - display the first image in Lightbox (on click)
<a href="#" onclick="Lightbox.start(
    $('#galleria-content ul.galleria li a:eq(0)').attr('id'))); 
return false;">

Windows 7 start without password: netplwiz 
Windows XP: control userpasswords2

"from IPython import embed; embed()" to get an interactive ipython
  terminal at any point in your code

Centralita měřená stupněm uzlu (degree centrality)
Blízkost polohy ve středu (closeness centrality)
Středová mezipoloha (betwenness centrality)

Start IPython with PyPy
PYTHONPATH=/usr/lib/python2.7/dist-packages:$PYTHONPATH  \
pypy /usr/bin/ipython

# bzip2 *.log files
find . -iname '*.log' -exec bzip2 -9 -v  {} \;


field          allowed values
-----          --------------
minute         0-59
hour           0-23
day of month   1-31
month          1-12 (or names, see below)
day of week    0-7 (0 or 7 is Sun, or use names)