#!/bin/bash stty -echo while

sql 代码

#!/bin/bash

# none 1,2,3,15,20 signal
trap '' 1 2 3 15 20

#clear screen ,close redisplay
clear
stty -echo

#set password
echo -n "Enter your codeword: "
read secretcode
echo

#confirm password
echo -n "Enter your codeword again: "
read same
echo
if [ $secretcode != $same ]
    then
        echo "Work on your short-term memory before using this code! "
        stty echo
        exit 1
fi

#get user input
clear
echo -n "Enter the code word: "
read yourguess
echo


#only input is right codeword ,or loop forever
while [ "$secretcode" != "$yourguess" ]
do
    clear
    echo "secretcode: $secretcode \n yourguess: $yourguess"
    echo -n "Enter the code word: "
    read yourguess
done

#input real password to continue
clear
echo "Back gain! "
stty echo
exit 0

sql 代码

#shell
#! /bin/bash
files=(`ls`) numfiles=`ls | wc -w`

echo ${files[*]}
echo ${files[1]}