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Filter summary by type

  • Horizontal slicing - select subset of lines:
          cat, head, tail, *grep, sed, uniq
  • Vertical slicing - select subset of columns:   cut, awk, sed
  • Substitution:   tr, sed
  • Aggregation, simple statistics:   wc, uniq
  • Assembly - combining data sources:   paste, join
  • Reordering:   sort
  • Viewing (always end of pipeline):   more, less
  • File system filter:   find
  • Programmable filters:   sed, awk (and perl)