慶典的switch-case語句使語法錯誤

Question

#!/bin/bash
 

echo "Title: " 
read title 
echo "" 
until [ -n "$title" ] 
do 
    echo "Please enter title: " 
    read title 
    echo "" 
done 
echo "Author: " 
read author 
echo "" 
until [ -n "$author" ] 
do 
    echo "Please enter author: " 
    read author 
    echo "" 
done
 

check=cat ./BookDB.txt | egrep -ie "\b""$title""\b" | egrep -ie "\b""$author""\b" 
if [ -z "$check" ] 
then 
    echo "Error! Book does not exist!" 
    #need some code to continue 
else 
    echo "Book found!" 
    all=cat ./BookDB.txt | grep -i "$title"
 

oldtitle=`echo "$all" | cut -d ":" -f1` 
oldauthor=`echo "$all" | cut -d ":" -f2` 
oldprice=`echo "$all" | cut -d ":" -f3` 
oldavail=`echo "$all" | cut -d ":" -f4` 
oldsold=`echo "$all" | cut -d ":" -f5` 
 

網絡
同時：
做
回聲 「」 
回聲 「一）更新標題」 
回聲 「B）更新作者」 
回聲 「C）更新價格」 
回聲「d）更新量可用」 
回聲「E）更新銷售數量」 
回聲「F）返回到主菜單」 
回聲「」回聲
-n「請輸入您的選擇：」 
讀選項
 

case $option in 
    a) 
     echo -n "New title: " 
     read newtitle 
     if [ "$oldtitle" = "$newtitle" ] 
     then 
     echo "Title is the same as original" 
     else 
     all_title=`cut -f 1 -d ":" ./BookDB.txt` 
     check=`echo "$all_title" | grep -i "\b""$newtitle""\b"` 
     fi 
      if [ -n "$check" ] 
      then 
      echo "Book title already exists." 
      else 
      sed -i "s/$oldtitle:/$newtitle:/g" ./BookDB.txt 
      echo "Book title successfully updated." 

     fi 

b) 


esac 
done 

我不能運行巴蜀此代碼。他們說有一個語法錯誤，在我的情況下選擇在該行 B）

我使用情況報表時，在所有

Answer 1

看不出有什麼問題，你需要結束每個子句;;：

case $option in 
    a) 
     # do something 
     ;; 
    b) 
     # do something 
     ;; 
esac 

您可以閱讀here瞭解案例陳述的更多詳情。