add

linux C 写的图书馆学生登入界面源码

#! /bin/sh -
record_file=passwd
add_file=add
delete_file=delete
clear
echo "              用户信息增加情况"
echo "==========================================  "   
echo "输入用户的具体情况"  
  
while true						#用户名

 echo "username:" 
            read user_name;

do
        if (test  -z "$user_name") #-z 长度为0成真|判空方法2 "$user_name" = " "

                then
               echo "你还没有输入用户名"
   continue
          elif
         echo $user_name>temp 
         grep -qv "[a-zA-Z0-9]" temp

            then
             echo "输入的是无效的用户名 "
        rm -f temp
        else
case $user_name in
[a-zA-Z]*) 
if (awk -F: '{print $1}' $record_file|grep -wq $user_name)
then
echo "该用户已经存在"
continue         
echo " "
else
break
 fi;;
*)echo "用户名只能是字母或者下划线开头"     
;;
esac
fi
  done


while true                                     #密码
do

stty -echo		#输入不可见

				
   echo "password:"

   read passwd1


 if (test -z $passwd1)	     #输入不可见方法2 read -ers
then
  echo "还未输入密码,再来一次 "
continue
elif 
   (test `expr length $passwd1` -lt 6  ) #-lt 小等于
 then
 echo "密码长度不足6位,请重新输入"
continue
fi




#elif
#(        echo $passwd1>temp 
#         grep -qv "[a-zA-Z]" temp||grep -qv "[0-9]"
#)
#then
#echo "弱密码,为了您的密码安全是否重新输入?(Y或N)"
#read ans
#case "$ans" in
#y)continue;;
#Y)continue;;
#n)break;;
#N)break;;
#*)echo "请输入Y或N"
#continue;;
#esac


if
(echo $passwd1|grep -q "^[a-zA-Z]*$") || (echo $passwd1|grep -q "^[0-9]*$")
then
echo "输入的是弱密码"
echo "是否要重新输入?(Y或N)"
read y
case $y in
y|Y)continue;;
n|N)echo "";;
*)echo "输入错误重新输入"
continue
esac
fi


  echo "password again:"
 read passwd2

 if (test -z $passwd2)

    then
       echo "还未输入,重新来一次 "
     continue
 elif
    (test $passwd1 != $passwd2)
     then
       echo "两次输入不相同,请重新输入 "
continue 
else
 stty echo     #撤销输入不可见

    break
 fi
done


while true					#用户ID
do
   echo "user ID:" 
read uid
if 
(test -z $uid)
then
echo  " 没有键入ID,请再次输入"

continue
elif(
         echo $uid>temp
         grep -q "[^0-9]" temp
)
then
     echo "无效ID"
elif
(  test "$uid" -lt "500")		#判空方法2 "$uid" = " "
then
    echo "用户ID需要大于500,请再次输入"
 continue

else
 break
fi

done


while true					#组ID
do
 echo "group ID:" 

read gid
if
(test -z $gid)
then
echo  " 没有键入ID,请再次输入"
                                                                                
continue
elif (
         echo $gid>temp
         grep -q "[^0-9]" temp
)
then
rm -f temp
echo  " 无效ID"

else
                                                                                
break
fi
done



while true                                              #用户全名
                                                                                
 echo "user fullname:"

read full_name
                                                                                
do
           if (test  -z "$full_name")

                then

               echo "你还没有输入用户全名"

   continue

          elif

         echo $full_name>temp
         grep -qv "[a-zA-Z0-9]" temp
                                                                                
            then
           rm -f /root/07zsb-02-28/temp  
           echo "输入的是无效的用户全名 "
                                                                                
        else
break
 fi
       done


 #  echo "user todd:"					#主目录 
  #  read user_todd
  

while true
do
 echo "user shell:"

 read user_shell

   if (test -z $user_shell)
     then
         echo "没有输入!请再次输入"
      continue
   elif
       case $user_shell in
         bash)break;;
         csh)break;;
         kash)break;;
         sh)break;;
       esac
   then 
      echo  "输入的shell名不在本系统范围内! "
    else
       break
    fi
done

clear
echo "              用户信息增加情况"
echo "==========================================  "   
echo " 		   user name  :  $user_name "
echo "	   	   user ID  :  $uid "
echo "		   group ID  :  $gid "
echo "		   full name  :  $full_name "
echo "		   shell  :  $user_shell"

while true				#保存用户信息
do
 echo " " 
 echo "增加这个用户吗?(Y or N)" 
read answer1

if (test -z $answer1)
then
 echo "还未输入,请输入Y或N "
else
 case $answer1 in
 y)echo "$user_name: :$uid:$gid:$full_name: :$user_shell ">> $record_file
break;;
 Y)echo "$user_name: :$uid:$gid:$full_name: :$user_shell ">> $record_file
break;;
 n)break;;
 N)break;;
 *)echo "请重新输入Y或N"
   continue;;
 esac
fi
done




while true					#询问是否增加新用户
do
echo "还要继续添加新用户吗?(Y or N)"
read answer2
if (test -z $answer2)
then
 echo "还未输入,请输入Y或N "
else
 case $answer2 in
 y) clear
   sh $add_file;;
 Y)clear
   sh $add_file;;
 n)sh menu;;
 N)sh menu;;
 *)echo "请重新输入Y或N"
   continue;;
 esac
fi
done