number_lines.sheet

  nl      Number lines. Advanced options.\r\n\
  cat -n  Number all lines\r\n\
  cat -b  Number all non-blank lines\r\n\
  \r\n\
  \r\n\
  # Count lines\r\n\
  wc -l   \r\n\
  awk 'NF != 0 {++count} END {print count}';\r\n\
  sed -n '$='\r\n"