如何在shell脚本里用正则表达式限制输入格式
echo -ne "\n$MESSAGE for $THEUSER (minimum 8 chars. with one numeric/special char.) : "
stty -echo
read THEPASSWORD
stty echo
读进来的THEPASSWORD 如何符合上面的要求呢，如何检查?
[解决办法]
THEPASSWORD=ladofwind@123
n=0
echo "$THEPASSWORD"
[解决办法]
grep -q "........"
if [ $? == 0 ]; then
echo [minimum 8 chars] yes
n=`expr $n + 1`
else
echo [minimum 8 chars] no
fi
echo "$THEPASSWORD"
[解决办法]
grep -q "[0-9]"
if [ $? == 0 ]; then
echo [one numeric] yes
n=`expr $n + 1`
else
echo [one numeric] no
fi
echo "$THEPASSWORD"
[解决办法]
grep -q "[^0-9a-zA-Z]"
if [ $? == 0 ]; then
echo [one special] yes
n=`expr $n + 1`
else
echo [one special] no
fi
if [ $n == 3 ]; then
echo password valid
else
echo password invalid
fi
#!/bin/sh
read -p 'Set your password(your password must contain a minimum of 8 chars with one numeric/special char.) ' password
if ! echo $password
[解决办法]
egrep '[a-z]{7,}([0-9]
[解决办法]
[!@#$%&^*]){1}' 1>/dev/null;then
echo "your password is invalid"
fi
