Linux/Parsing

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lines

  • grep
grep -v ^$        # remove empty lines
  • tail
tail 
tail -f                # follow
tail -n 10             # last 10 lines
tail +3                # skip first 3 lines 
  • wc
wc -l                  # count lines 

chars

  • cut
  • tr

sed & awk

  • sed + control characters
sed 's/\x00/controlcharwashere/g'
sed -n '/Iowa/,/Montana/p'


other

  • slowing output
cat incoming.log | pv -qL 1000 | tee temp
  • show as hex
od -t x1 -An



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