Arrays Bash数组操作

我正在为一个Unix/Linux类做一个项目，在另一个文件中有一些数组，如下所示

所有数组应存储为1或0

    T1=( 1 1 1 1 1 )
    T2=( 1 1 1 1 1 )
    T3=( 1 1 1 1 1 )
    T4=( 1 1 1 1 1 )
    T5=( 1 1 1 1 1 )

但是，我很难将数组编辑为0并使更改保持不变

    #!/bin/bash

    i=0

    for line in `cat JeopardyOut`
    do
        let i=i+1
        #Creating one big Array with all the values from the arrays file
        Array[i]=$line
    done

    cat JeopardyOut

    #Parsing the giant Array into the main 5 arrays I'm using
    createArray()
    {
    y=0
    for y in 0 1 2 3 4
    do
         for i in 2 3 4 5 6
         do
            #echo "${Array[i]}"
            T1[$y]=${Array[i]}
         done

         for i in 9 10 11 12 13
         do
            #echo "${Array[i]}"
            T2[$y]=${Array[i]}
         done

         for i in 16 17 18 19 20
         do
            #echo "${Array[i]}"
            T3[$y]=${Array[i]}
         done

         for i in 23 24 25 26 27
         do
            #echo "${Array[i]}"
            T4[$y]=${Array[i]}
         done

         for i in 30 31 32 33 34
         do
            #echo "${Array[i]}"
            T5[$y]=${Array[i]}
         done

    done
    }

    createArray

    ArrayNum=$1
    Index=$2

也许有更好的方法可以做到这一点，但这正是最终对我有效的方法

      #Changing the necessary indexes, this will be used by a completely 
      #different script 
      ChangeArray()
      {

       if [[ $ArrayNum == "1" ]]; then
           T1[ $Index ]=0
      elif [[ $ArrayNum == "2" ]]; then
           T2[ $Index ]=0
      elif [[ $ArrayNum == "3" ]]; then
           T3[ $Index ]=0
      elif [[ $ArrayNum == "4" ]]; then
           T4[ $Index ]=0
      elif [[ $ArrayNum == "5" ]]; then
           T5[ $Index ]=0
      else
            echo "Invalid Parameters"
       fi
  } 

 if [[ $ArrayNum -ne "" || $Index -ne "" ]]; then
    if [[ $ArrayNum == "5" && $Index == "5"]]; then
         reset
    else
         ChangeArray
    fi 
 fi
   # And the part that's likely at fault for my issue but don't know how I 
   # should fix it
   echo "T1=( ${T1[*]} )" > JeopardyOut
   echo "T2=( ${T2[*]} )" >> JeopardyOut
   echo "T3=( ${T3[*]} )" >> JeopardyOut
   echo "T4=( ${T4[*]} )" >> JeopardyOut
   echo "T5=( ${T5[*]} )" >> JeopardyOut

   cat JeopardyOut

我试图编辑数组的方式有问题。。。 虽然我可以将任何数组的任何索引设置为0，但我不知道为什么在重新运行脚本时，我更改为0的1会变回1

---

注：这是Sierra中Linux编程的一个基础类，除了我通过反复试验学到的内容外，我对bash脚本的理解并不多。

也许这个示例可以帮助您

#!/bin/bash

while read -r line; do
    #Creating one big Array with all the values from the arrays file
    Array+=(`grep -oP '\(\K(.+?)(?=\))' <<< "$line"`)
done < JeopardyOut

echo "Giant Array value: ${Array[@]}"

# Or you can clone the arrays in the file

i=0
while read -r line; do
    ((i++))
    eval "T$i=(`grep -oP '\(\K(.+?)(?=\))' <<< "$line"`)"
done < JeopardyOut

echo "This is the contents of array T1: ${T1[@]}"
echo "This is the contents of array T2: ${T2[@]}"
echo "This is the contents of array T3: ${T3[@]}"
echo "This is the contents of array T4: ${T4[@]}"
echo "This is the contents of array T5: ${T5[@]}"

# This can help you to make a new file
# I change some value to our arrays

T1[2]=0
T2[1]=true

# Now let's go to make a new arrays file

echo "T1=(${T1[@]})" > JeopardyOut2
echo "T2=(${T2[@]})" >> JeopardyOut2
echo "T3=(${T3[@]})" >> JeopardyOut2
echo "T4=(${T4[@]})" >> JeopardyOut2
echo "T5=(${T5[@]})" >> JeopardyOut2

echo "This is the content of JeopardyOut2:"

cat JeopardyOut2

---

bash

确实不是执行数组操作的理想语言；数组旨在作为传递参数的第二级引用，而不是作为通用数据结构。您能否给出一个示例，说明调用

createArray

后，

Array

将是什么样的，以及生成的

T

数组应该是什么样的？您需要回到开头，找到一个解决方案来处理文件中的一行。开始时的for循环毫无意义。尝试只运行for循环并在$line的值处回显。。。你可能会对你得到的结果感到惊讶（这是假设文件的格式是问题顶部的格式）

eval

在这里几乎肯定是不必要的。感谢上帝，谢谢你，一个漫长的通宵，呃，你救了我一命。我想我找到了问题，但解决它是另一回事。我在表达上有一个弱点。我需要一些时间来理解你在那里所做的一切，但这是一个很大的帮助。再次感谢。我不明白downvotation。@chepner我必须使用eval，因为我不能用另一种方式将数字分配给数组名。当然可以：停止使用循环来设置5个变量。

$ bash example
Giant Array value: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
This is the contents of array T1: 1 1 1 1 1
This is the contents of array T2: 1 1 1 1 1
This is the contents of array T3: 1 1 1 1 1
This is the contents of array T4: 1 1 1 1 1
This is the contents of array T5: 1 1 1 1 1
This is the content of JeopardyOut2:
T1=(1 1 0 1 1)
T2=(1 true 1 1 1)
T3=(1 1 1 1 1)
T4=(1 1 1 1 1)
T5=(1 1 1 1 1)
$