Generate random passwords

rpass.sh

#!/bin/bash
#
# Usage: ${0} <length> <count> <hex or alpha>
# Example: ${0} 12 1 h
#          ${0} 32 2
#          ${0}

alnum="[:digit:][:alpha:]"
hex="a-f[:digit:]"

if [ "${3}" == "h" ]; then
    pwtype=$hex
else
    pwtype=$alnum
fi

env LC_CTYPE=C tr -dc $pwtype < /dev/urandom | fold -w ${1:-32} | head -n ${2:-1}