#!/bin/sh#usage(){  printf  "input oldDIr number"  read USERNAME1  echo $USERNAME1  USERNAME1_TIMES=$USERNAME1  printf "input  newDir number"  read USERNAME2  USERNAME2_TIMES=$USERNAME2  echo $USERNAME2#  for i in `seq 3`#  do#  sleep 1s#  echo ${i}"s"#  done  clear}return_oldDir(){       #USERNAME1=315640	       sum=$USERNAME1           #     echo $sum       #315640,313642//956/912/824/        idDir=""              for((i=0; i<3; i++))       do	    temp=`expr $sum % 999`           # echo $temp	    sum=`expr $sum + $temp`	   # echo $sum	    temp=`expr $temp + 1`	            idDir=${idDir}${temp}"/"       done        #echo "the oldDir is:"      # echo $idDir      #return idDir}                                                                                     return_newDir(){       	sum=$USERNAME1        #;//315640,313642//956/912/824/                for((i=0; i<3; i++))        do	temp=`expr $sum % 999`             sum=`expr $sum / 999`                 newidDir=${temp}"/"${newidDir}       	done	#echo "the newDir is:"	#echo $newidDir	#return newidDir;}usagefor((j=`expr $USERNAME1_TIMES - 0` ;j<`expr $USERNAME2_TIMES - 0`; j++))doreturn_oldDir#echo  $idDir return_newDir#echo $newidDirsource_old=${idDir}"*"source_old_exit=${idDir%%/}source_new=${newidDir%%/}#echo $source_new#echo $source_creat_dirif [ -d $source_old_exit ]thenif [ -d $source_new ]thenecho "new dir exit"elseecho "new dir not exit can makedir"mkdir -p $source_newecho ${source_new}"create"chmod 777 $source_newficp -i $source_old $source_newelseecho "old dir not exit"fiecho $source_old#echo $source_newnewidDir=""USERNAME1=`expr $USERNAME1 + 1`USERNAME2=`expr $USERNAME2 + 1`#echo $USERNAME1#echo $USERNAME2doneexit 0

 可惜了C++版本让我弄丢了  恶心