Password practice

password_practice.sh

#!/bin/bash 
echo "Type the new password slowly.  Ensure that there are no mistakes."
read -s -p "Please enter the new password> " p; 
echo "  $(printf "$p" | wc -c) characters long"
g=3
while [ $g -ne 0 ]; do
  read -s -p "Verify by typing slowly> " c
  if [ "$c" == "$p" ]; then
    echo "  MATCH"
    break
  else 
    echo "  NOT A MATCH"
    g=$[ $g - 1 ]
  fi
done
if [ $g -eq 0 ]; then
  echo "WARNING: This password was too difficult.  Pick a better one."
  exit 1
fi
echo "Entering practice stage.  Type quicker and in different postures"
echo "to build muscle memory."
practice=1
while [ $practice -ne 0 ]; do
  g=3; 
  while [ $g -gt 0 ]; do 
    read -s -p "Check ($g left)> " c; 
    if [ "$p" == "$c" ]; then 
      g=$[ $g - 1 ]; 
      echo "  MATCH"; 
    else 
      echo "  MISS - start again"; 
      g=3; 
    fi; 
  done; 
  echo "Excellent.  Practice makes perfect."
  read -p "Press ENTER to practice some more. " retry
  if [ -n "$retry" ]; then
    practice=0
  fi
done

When it's time to change a password I will use all of the time, I like a chance to practice. This script helps me build muscle memory and to confirm that I still like the password after typing it a dozen times. I will practice watching my fingers, in awkward angles, with my eyes closed, and even looking away.
Like my piano teacher taught me, you haven't begun to master something until you can do it three correctly times in a row without a crutch.