Arrays 未递增的数组值

我正在尝试使用以下方法增加数组的索引 然而，它似乎覆盖了以前的索引，这是错误的。任何关于我可能做错什么的建议

CURRENT_INDEX=${#ARRAY_EXIST_ONLY_IN_STEPPER[@]} 
((CURRENT_INDEX++))
ARRAY_SAMENAME_SAME_SIZE[${CURRENT_INDEX}]=${FILENAMEONLY}
echo "File is present in both and both file sizes are the same : "${FILENAMEONLY} " Placed in  ${CURRENT_INDEX}"

上面的代码实际上正在这里使用，我可以看出数组索引正在被覆盖。每次在数组中创建一个新条目时，假定它提取当前索引，然后将其递增1，然后使用该索引。但是看起来它没有这样做。关于为什么数组会覆盖它们以前的索引，有什么建议吗

declare -a ARRAY_SAMENAME_DIFFERENT_SIZE;
declare -a ARRAY_SAMENAME_SAME_SIZE;
declare -a ARRAY_EXIST_ONLY_IN_STEPPER

for var in ${ARRAY_WAV_FILES_IN_STEPPER[@]}
do
  FILENAMEEXTENSION=${var##*/}              
  FILENAMEONLY=${FILENAMEEXTENSION%.*}
  ################################################################################
  FIND_COMMAND_RESULT=""
  FindCommand="find ${ARRAY[1]} -iname ${FILENAMEEXTENSION}"
  FIND_COMMAND_RESULT=$(${FindCommand}) 
  echo "Working with : "${var}
  if [[ !  -z  ${FIND_COMMAND_RESULT}  ]]
  then
     #The file is present in the 0th Array index directory 
     #check if they are the same size
     CURRENT_FILESIZE=$(stat -c%s ${var})
     REMOTE_FILESIZE=$(stat -c%s ${FIND_COMMAND_RESULT})
     if [ ${CURRENT_FILESIZE} -eq ${REMOTE_FILESIZE} ] 
     then
             #The file is present in both and both file sizes are the same - Record it
             CURRENT_INDEX=${#ARRAY_EXIST_ONLY_IN_STEPPER[@]} 
             ((CURRENT_INDEX++))
             ARRAY_SAMENAME_SAME_SIZE[${CURRENT_INDEX}]=${FILENAMEONLY}
             echo "File is present in both and both file sizes are the same : "${FILENAMEONLY} " Placed in  ${CURRENT_INDEX}"
     else
             #The file is present in both but they have different sizes
             echo "The file is present in both but they have different sizes : " ${var}
             CURRENT_INDEX=${#ARRAY_SAMENAME_DIFFERENT_SIZE[@]} 
             ((CURRENT_INDEX++))
             ARRAY_SAMENAME_DIFFERENT_SIZE[${CURRENT_INDEX}]=${FILENAMEONLY}
     fi
  else
      #The file exists only in stepper
      echo "The file is only in stepper : " ${var}
      CURRENT_INDEX=${#ARRAY_EXIST_ONLY_IN_STEPPER[@]} ; ((CURRENT_INDEX++))
      ARRAY_EXIST_ONLY_IN_STEPPER[${CURRENT_INDEX}]=${FILENAMEONLY}
  fi
done 

---

有一种更简单的方法可以将项添加到数组中：

ARRAY_SAMENAME_SAME_SIZE+=("${FILENAMEONLY}")

---

@Gene，一个原因是shell在每个系统上都可用，但Perl并非如此。另一个原因是人们试图像编写C一样编写shell脚本。