# ***************************************************************************

# This function encode a sting in md5 hash of 32 characters. You can short

# the length with the second parameter.

#

#  @param string $1 string (required)

#  @param integer $2 length (option, default: 32)

#  @return string

#  @example:    md5 "Hello World" 8

function md5() {

local length=${2:-32}

local string=$( echo "$1" | md5sum | awk '{ print $1 }' )

echo ${string:0:${length}}

}