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从菜单中选择时无法执行任务？

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从菜单中选择时无法执行任务？

有没有办法在我选择任务后自动创建用户、删除用户、创建组和删除组？另外，为什么在选择要执行的任务后我无法执行任何这些任务，但在选择任务时却提示我输入您的选择？

#!/bin/bash
while true
do
 clear
 echo "========================="
 echo "Menu ---"
 echo "========================="
 echo "Enter 1 to Create Group 1: "
 echo "Enter 2 to Remove Group 2: "
 echo "Enter 3 to Create User  3: "
 echo "Enter 4 to Remove User  4: "
 echo "Enter q to exit the menu q: "
 echo -e "\n"
 echo -e "Enter Your selection \c"
 read answer
 case "$answer" in
 1) groupadd ;;
 2) groupdel ;;
 3) useradd ;;
 4) userdel ;;
 q) exit ;;
 esac
 echo -e  "Enter return to continue \c"
 read input
done

答案1

您必须添加您的用户或组的名称：

useradd Krup

groupadd KrupGroup

删除也一样

所以你的脚本将是这样的：

#!/bin/bash
while true
do
clear
echo "========================="
echo "Menu ---"
echo "========================="
echo "Enter 1 to Create Group 1: "
echo "Enter 2 to Remove Group 2: "
echo "Enter 3 to Create User  3: "
echo "Enter 4 to Remove User  4: "
echo "Enter q to exit the menu q: "
echo -e "\n"
echo -e "Enter Your selection \c"
read answer
case "$answer" in
1) echo "enter Group name to add"; read group ;groupadd $group ;;
2) echo "enter Group name to delete"; read group ;groupdel $group ;;
3) echo "enter User name to add"; read user ;useradd $user ;;
4) echo "enter User name to delete"; read user ; userdel $user ;;
q) exit ;;
esac
echo -e  "Enter return to continue \c"
read input
done

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