shell脚本，循环的记录

   #########################################################################

   # File Name: showlogged.sh

   # Author: zhang yunabo

   # mail: ma6174@.com

   # Created Time: Mon  Aug  :: AM EDT

   #########################################################################

   #!/bin/bash

   declare -i debug=

   declare -i count=

  declare -i showusers=

  for i in `seq  $#`;do

      if [ $# -gt  ];then

          case $ in

              -h|--help)

                  echo "usage:`basename $0` -h|--help -c|--counts -v|--verbose"

                  exit ;;

              -v|--verbose)

                  let debug+=;;

              -c|--counts)

                  let count+=;;

              *)

                  echo "usage:`basename $0` -h|--help -c|--counts -v|--verbose"

                  exit ;;

          esac

      fi

      shift

  done

  if [ $count -eq  ]

  then

      echo "loged user :`who | wc -l`"

  fi

  if [ $debug -eq  ]

  then

      w

  fi