Case study 2011-04-20 Get the most preferred line.
Case study 2010-07-23 Find a sequence to install modules.
Case study 2010-04-08 List the nodes without outgoing edges.
Case study 2010-04-06 Remove non-existent members from /etc/group according to /etc/passwd.
Case study 2007-11-08 Remove from the dependency list the modules which do not depend on others.
Case study 2006-05-01
Case study 2004-02-11 Comment out some lines.
Case study 2003-11-10
Case study 2003-11-10 Replace indentation with a string.
Case study 2002-03-11 Removing records that do not have extra information.
Case study 2002-03-11
Processing the output of a 'tar tvf tarfile' command.
Case study 2002-02-01
Case study 2001-11-08
Case study 2001-11-08
Case study 2001-11-08
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