Random String Generator

random-string

#!/usr/bin/env bash

usage()
{
cat << EOF
usage: random-string

This script run the test1 or test2 over a machine.

OPTIONS:
   -h      Show this message
   -c      Number of characters returned
   -s      Number of random strings returned
EOF
}

characters=32
strings=1

while getopts “hc:s:” OPTION
do
     case $OPTION in
         h)
             usage
             exit 1
             ;;
         c)
             characters=$OPTARG
             ;;
         s)
             strings=$OPTARG
             ;;
     esac
done

i=1

echo ""
echo "Random Strings:"
echo "--------------------------------------"

while [[ $i -le $strings ]]
do
	LC_CTYPE=C tr -dc A-Za-z0-9_\!\@\#\$\%\^\&\*\(\)-+= < /dev/urandom | head -c $characters | xargs

	((i = i + 1))
done

echo ""

Written for OS X, works on Ubuntu 12.04