jeltsch's blog

Upgrading mysql on Ubuntu Lucid Lynx (10.04) hangs

Already the third time this happens to me: An update is available for the mysql server and I just "apt-get upgrade". The upgrade process gets totally stuck at the following task:
Preparing to replace mysql-server-5.1 5.1.66-0ubuntu0.10.04.1 (using .../mysql-server-5.1_5.1.66-0ubuntu0.10.04.2_i386.deb) ...
mysql stop/waiting

The process that got again stuck in some eternal loop (or whatever) is an egrep replacement of some textfile:
egrep -qi -r ^[^#]*ndb.connectstring|^[:space:]*\[[:space:]*ndb_mgmd /etc/mysql/

Some useful PDF editing (and search) commands

  • Insert pages with interleave: pdftk A=input_odd_pages.pdf B=input_even_pages.pdf shuffle A B output collated.pdf(from the pdftk package)
  • Split an A2-sized PDF into two A3 pages for printing (no overlap): pdfposter -m A3 -p A2 Periodic-Table_A2.pdf Periodic-Table_2xA3.pdf
  • Split an arbitrary-sized PDF into A3 pages for printing at 100% size (= 1), no overlap: pdfposter -m A3 -s1 Poster.pdf Poster_split_to_A3.pdf

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