Useful Commands, con't

• Rpm -ql coreutils | grep bin

  • fileutils, textutils, sh-utils on older systems

• Sort, uniq, tr, join, pr, expr, seq, basename

  • INFILE=trilug.mbox
  • grep '^From ' < $INFILE |
  • awk '{print $2}' |
  • sort |
  • uniq -c |
  • sort -rn > $EMAILCOUNTFILE
  • grep '^From .*@.*' < $INFILE |
  • awk '{print $2}' |
  • uniq |
  • sort |
  • uniq > $EMAILOUTFILE
  • for i in `seq 1 100`
  • do
    • touch $i
  • done

• Many others – audience suggestions?

Notes: