如何提示用户输入sudo密码？

Question

我的问题是，在运行此bash脚本时做出选择后，如何实施要求sudo密码的操作。 例如，如果用户选择在/目录中进行搜索，则脚本将以拒绝权限返回。 我想弄清楚如何让脚本提示输入密码，然后继续运行。

#!/bin/bash
function press_enter
{
echo ""
echo -n "Press Enter to continue"
read
clear
}
selection=
where_selection=
what_selection=
until [ "$selection" = "3" ]; do
echo -e "Where would you like to search 
1- Root
2- Home
3- Exit

Enter your choice ---> \c"
read selection
case $selection in
1) cd / ; press_enter ;;
2) cd /home ; press_enter ;;
3) echo "Have a great day!" ; exit ;;
esac
echo "What is the name of the file you would like to search for?"
read -r a
if find . -name "$a" -print -quit | grep -q .
then
echo "You found the file"
else
echo "You haven't found the file"
fi
done

Answer 1

您可以做这样的事情，尽管有点麻烦：

#!/bin/bash
function press_enter
{
    echo ""
    echo -n "Press Enter to continue"
    read
    clear
}
selection=
where_selection=
what_selection=
sudo=""
until [ "$selection" = "3" ]; do
    echo -e "Where would you like to search 
    1- Root
    2- Home
    3- Exit

    Enter your choice ---> \c"
    read selection
    case $selection in
        1) cd / ; sudo="sudo"; press_enter ;;
        2) cd /home ; sudo=""; press_enter ;;
        3) echo "Have a great day!" ; exit ;;
    esac
    echo "What is the name of the file you would like to search for?"
    read -r a
    if $sudo find . -name "$a" -print -quit | grep -q .
    then
        echo "You found the file"
    else
        echo "You haven't found the file"
    fi
done

基本上$sudo是一个空字符串，除非用户选择1，否则它将运行“ sudo”。 更好的方法是让第二个if块在需要时使用sudo运行命令。