#!/bin/bash
unset password
prompt="Enter Password:"
while IFS= read -p "$prompt" -r -s -n 1 char
do
    if [[ $char == $'' ]]
    then
        break
    fi
    prompt='*'
    password+="$char"
done
echo
echo "Done. Password=$password"

#!/bin/bash

unset PASSWORD
unset CHARCOUNT

echo -n "Enter password: "

stty -echo

CHARCOUNT=0
while IFS= read -p "$PROMPT" -r -s -n 1 CHAR
do
    # Enter - accept password
    if [[ $CHAR == $'' ]] ; then
        break
    fi
    # Backspace
    if [[ $CHAR == $'177' ]] ; then
        if [ $CHARCOUNT -gt 0 ] ; then
            CHARCOUNT=$((CHARCOUNT-1))
            PROMPT=$'b b'
            PASSWORD="${PASSWORD%?}"
        else
            PROMPT=''
        fi
    else
        CHARCOUNT=$((CHARCOUNT+1))
        PROMPT='*'
        PASSWORD+="$CHAR"
    fi
done

stty echo

echo $PASSWORD

-s     Silent mode.  If input is coming from a terminal, characters are not echoed.

#!/bin/sh
 read -p "Username: " uname
 stty -echo
 read -p "Password: " passw; echo
 stty echo

#!/bin/bash

unset password
echo -n "Enter password: "
while IFS= read -p "$prompt" -r -s -n 1 char
do
    # Enter - accept password
    if [[ $char == $'' ]] ; then
        break
    fi
    # Backspace
    if [[ $char == $'177' ]] ; then
        prompt=$'b b'
        password="${password%?}"
    else
        prompt='*'
        password+="$char"
    fi
done

stty -echo
read something
stty echo

read -s pass
echo "$pass" | sed 's/./*/g'

#!/bin/bash
echo "------------------------------"

n=7
echo " Enter Password :"

for (( i=1;i<n;i++ ))
do
    stty -echo
    read -r -s -n 1 char
    stty echo

    echo -n "*"
    pass+="$char"

done

echo " "
echo " Your password : $pass "

echo ""
echo "-------------------------------"