Simulate login.

[Kenny Chau]

Hi all,

I would like to write a shell script which will simulate login include login prompt and password prompt and then it will compare the password table (self create), if matched, continue; if not match, exit. How can I do that? Also, how to make the password invisible while typing the password? or subsitute by *?

Many thanks.
Kenny.

[Deepak Extross · Accepted solution]

Kenny,

You can turn off echo using stty.
This should start you off:

echo "Login :\c" read user echo "Password :\c" stty -echo
read pass
stty echo

echo You entered $user $pass

[Deepak Extross]

Oops..formatting problems.

echo "Login :\c"
read user
echo "Password :\c"
stty -echo
read pass
stty echo

echo You entered $user $pass


p = grep $user | cut -f2
// assuming that username and password are stored in a pipe-delimited format in

if [ $pass = $p ]
then
// do your stuff here
else
exit -1
fi

[Kenny Chau]

Thanks Deepak, you had got what I want.

Thanks very much.
Kenny.