a password manager alternative

#!/bin/bash
#
# author: Samuel Gaehwiler
#         www.klangfreund.com
#
# dependencies:
#  7za
#  (on OS X, get it via 'brew install p7zip')
#
# usage:
#  ./encrypt.sh
#
#  To decrypt, use e.g. 'The Unarchiver.app' from the App Store.

password=replaceThisWithYourMasterPassword

dateAndTime=$(date +\%y\%m\%d_\%H\%M\%S)

# Compress and encrypt
# --------------------
# Source: http://xmodulo.com/how-to-create-encrypted-zip-file-on-linux.html

backupFileName=$(date +\%y\%m\%d_\%H\%M\%S)_Samuel_Gaehwiler_encrypted.zip

returnText=$(7za a -tzip -p$password -mem=AES256 $backupFileName encrypt.sh payload/*)
echo $returnText

# Be aware that the list of file names can be viewed without knowing the password!
#   unzip -l <filename>.zip
#
# source: http://security.stackexchange.com/questions/35818/are-password-protected-zip-files-secure/35879#35879


# Delete the payload if the encryption went well.
# -----------------------------------------------

zipSuccessfullyCreated="Everything is Ok"
if test "${returnText#*$zipSuccessfullyCreated}" != "$returnText"
then
    rm -r encrypt.sh payload
else
    echo "The creation of the encoded zip file did not work. Reason unknown."
fi