shell脚本练习02--求字符串的长度

  #########################################################################
   # File Name: -.sh
   # Author: zhang yunabo
   # mail: ma6174@.com
   # Created Time: Tue  Sep  :: PM EDT
   #########################################################################
   #!/bin/bash
   #default="default"
   #inputvar=${:-default}
  #inputvar=expr length $
  #if [ $inputvar = $default ]
  #then
  #   echo "what's you write is $inputvar"
  #else
  #   echo "what's you write is $inputvar,length:${#inputvar}"
  #fi

  # paragraph-space.sh
  minlin=

  while read line
  do
      echo "$line"

      len=${#line}
      if [ "$len" -lt "$minlin" ]
      then
          echo
      fi
  done
  exit