比較陣列值與用戶輸入bash

Question

我想比較用戶輸入與字符串數組值，當我這樣做時，這兩個值似乎是相同的，當我打印出來，但if語句沒有看到他們作爲等於。有什麼明顯的我失蹤了。

k=0 
while [ -z $arg1 ] 
do 
    while [ $k -ne 9 ] 
    do 
    # ask question 
    echo "${question[k]}" 
    answer="${answer[k]}" 
    read -p "YES/NO " arg1 
    # check answer 
    if [ '$arg1' = '$answer' ]; # problem is here 
    then 
     echo "Correct!" 
     let "k=$k+1" 
    else 
     echo "Incorrect!" 
     echo "Your answer: $arg1" 
     echo "Correct answer: $answer" 
    fi 
    done 
done 

Answer 1

替換：您還沒有放什麼東西是在回答問題和陣列

if [ '$arg1' = '$answer' ]; 
with 
if [ "$arg1" = "$answer" ] ; 

，並檢查