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#!/bin/sh # Demonstrate reading passwords in a shell script # while not echoing those passwords to the screen. # Note `read -s` in bash 3 at least does not echo # the return/newline either? Therefore we need to # `echo >&2` after each read to simulate that. getpassword() { until [ "$password" = "$rpassword" -a -n "$password" ]; do read -s -p "Enter a password for user '$1' : " password; echo >&2 read -s -p "Reenter password for user '$1' : " rpassword; echo >&2 done echo "$password" } pw=`getpassword "${1:-blah}"` echo "password is '$pw'"
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