make temporary password in bash

gistfile1.sh

# Explanation haiku:
# semi-random temp password
# easy to remember, type
# not very secure
function maketemppassword() {
  part1="$(awk 'length==8' /usr/share/dict/words | grep -v '[^[:alpha:]]' | shuf -n 1 | tr '[:upper:]' '[:lower:]')"
  part2="$(< /dev/urandom tr -dc 0-9 | head -c${1:-2};echo;)"
  part3="$(< /dev/urandom tr -dc A-Z | head -c${1:-2};echo;)"
  echo "${part1}-${part2}_${part3}"
}