最近進度有點慢，跟着《私房菜》學習進行到了Linux ACL權限設置這一章節，由於書中經常有加賬號和刪除賬號的操作，就覺得太繁瑣了，正好可以拿這個來繼續鞏固下前一章腳本編寫的基礎。話不多說進入正題。
本腳本實現的功能是根據用戶輸入的選項來選擇是“添加”還是“刪除”賬號，以下是腳本代碼。
#!/bin/bash
#Program:
# This program will batch add accounts.
#History:
#2016/04/14 MG First release
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH
echo "Input your operation:" #選項說明
echo "1.Option 1 is add user account."
echo "2.Option 2 is del user account."
echo ""
while [ -z "$op" ] #進行判斷用戶是否有輸入
do
read -p "Enter your operation: " op #用戶輸入選項
done
case $op in #對操作進行判斷
"1")
while [ -z "$usr" ] #判斷用戶輸入賬號名是否爲空
do
read -p "Input your user account: " usr
done
read -p "input add quantity: " nu
chg=$(cut -d: -f1 /etc/passwd |grep $usr) #搜索系統是否有該賬號
if [ "$chg" == "" ];then
read -p "input add quantity: " nu #輸入要創建的賬號
nu=${nu:-1} #如果用戶沒輸入則默認爲一個
for (( i=1;i<=$nu;i++ ))
do
# echo $usr$i
useradd -c "$usr$i" $usr$i
echo "$usr$i"|passwd --stdin $usr$i # 批量爲用戶添加密碼,不顯示添加後的回顯信息
chage -d 0 $usr$i #強制新用戶第一次登陸時更改密碼
done
echo "$nu accounts added successfully!"
else
echo "The user $usr account is exist."
exit 1
fi
;;
"2")
read -p "Enter your account: " users
if [ ! -z "$users" ];then
usr=$(grep $users /etc/passwd |cut -d: -f1)
for user in $usr
do
# echo $user
read -p "Are you sure to del this account?" yn
if [ "$yn" == "y" -o "$yn" == "Y" ];then
userdel -r $user && echo "$user accont deleted successfully!"|| echo "Delete failed!"
else
echo "You have cancel this operation."
exit 0
fi
done
fi
;;
esac
該腳本還是不夠完善，比如創建賬號的時候如果之中存在了“test"賬號，那就無法以test爲開頭創建test2等等賬號了，還有一些其他的問題等之後再慢慢補充吧，每天寫一點就會有進步。
（PS. 英文太差湊活看吧，都是中式英語o(╯□╰)o）