badsector implements the algorithm described in http://smartmontools.sourceforge.net/BadBlockHowTo.txt for the ext[2-4] partitions.
The smartmontools can report problematic bad sectors in LBA addressing format. This program relocates bad LBA sectors, provided they are unused.
ipset_list is a wrapper script for listing sets of the netfilter ipset program. It allows you to match and display sets, headers, and elements in various ways. Optionally, the output can be colorized.