如何檢查rmdir是否返回EEXIST或ENOTEMPTY？

Question

我想寫一個bash腳本，請求一個目錄，然後確認後，刪除該目錄。我也需要它告訴用戶目錄是否爲空，並詢問他們是否想要刪除它。

我想我會使用rmdir並檢查返回值以確保該目錄被刪除，如果不是原因，但到目前爲止我不知道什麼返回值等同於EEXIST或ENOTEMPTY。到目前爲止，我得到的唯一錯誤值是1.

如果目錄中有文件，返回值應該是多少？

Answer 1

單獨進行檢查。不完美，但一開始

if [ ! -e "$DIR" ] 
then 
    echo "ERROR: $DIR does not exist" >&2 
elif [ ! -d "$DIR" ] 
then 
    echo "ERROR: $DIR is not a directory" >&2 
elif [ ! -r "$DIR" ] 
then 
    echo "ERROR: $DIR cannot be read" >&2 
elif [ $(ls -a $DIR | wc -l) -gt 2 ] 
then 
    echo "ERROR: $DIR is not empty" >&2 
else 
    rmdir $DIR 
fi 

注意：rmdir仍然可能會失敗。想到的是你沒有對$DIR父目錄的寫入權限。

Answer 2

您可以嘗試使用此代碼：

#!/bin/bash 

check_path() { 
     if [ "x$1" = "x" ] 
     then 
       echo "ERROR: You have to specify a valid path." 
       exit 1 
     fi 

     if ! [ -d "$1" ] 
     then 
       echo "ERROR: The specified path does not exists or it's not a directory" 
       exit 1 
     fi 

     X="`find \"$1\" -maxdepth 1 | tail -n 2 | wc -l`" 
     if [ $X -gt 1 ] 
     then 
       X="R" 
     else 
       X="" 
     fi 

     while [[ "x$X" != "x" && ("x$X" != "xs" && "x$X" != "xn") ]] 
     do 
       echo "The specified path ($1) is not empty. Are you sure you want to delete it anyway? (S/n)" 
       stty -echo 
       read X 
       stty echo 
     done 
     if [ "x$X" == "xn" ] 
     then 
       echo "Operation interrupted by the user." 
       exit 0 
     fi 
} 

echo -n "Please insert the path to delete: " 
stty -echo 
read DIRNAME 
stty echo 
echo 

check_path "$DIRNAME" 

echo "Removing path $1" 
echo rm -fr "$DIRNAME" 

HTH