Stop output to screen

[maxcrook]

Ive have a script that will only be accessed when inputting a password - however i dont want to see the password as I type it - is there a way of not setting the echo so that you dont see the output of what your typing in.
If that makes sense!

 

[p5wizard]

You mean this?

...
echo "please enter password: \c"
stty -echo
read pw
stty echo
echo
if [ ${pw} = "secret" ]
then
 # OK
 ...
else
 echo "wrong password"
fi

But you wouldn't want the password in clear text inside the script - kind of silly, because people need read+execute access to a file if they want to run the script... So if they know where to look, the'll know the password.

HTH,

p5wizard

 

[Ogzilal]

hi,

Or this variant

# save terminal setting    
OLDSTTY=$(stty -g 2>/dev/null)
#in case of abnormal termination, restore terminal setting automatically
trap "stty $OLDSTTY" 1 2 3 6 14 15
#change terminal setting to blind mode
stty -icanon -echo min 1 time 0 2>/dev/null
#get password in blind mode
read PASSWORD?"Enter your password : "
#print a line feed
print
#restore terminal setting before continuing
stty $OLDSTTY 2>/dev/null
#continue to get things in visible mode
read login?"Enter your login : "

 

[maxcrook]

Thanks folks utilised bits of both.
Great stuff.