You should not save your passwords anywhare and should not forget them! This thesis will be solved only by algorithm.

get_password.sh

#!/usr/bin/env bash

DIR=$HOME/etc/get_password
. $DIR/get_password_string.txt
. $DIR/get_password_cycle.txt

ALGORITHM="sha1" # md4, md5, sha, sha1, ripemd160 and so on.

count=1

while [ $count -le ${CYCLE} ];
do
  STR=`echo ${STR} | openssl dgst -$ALGORITHM`
  count=`expr $count + 1`
done

#if [ `uname` == "Darwin" ]; then
#  echo ${STR} | awk '{print $2}'
#else
#  echo ${STR}
#fi
echo ${STR}

exit $?

get_password_cycle.txt

CYCLE=1 # set a numeric (integer)

get_password_string.txt

STR="" # put a seed string here