A quick bash script to encrypt a directory with a passkey.

bank.sh

#!/bin/bash

BANK_DIR=$HOME/.bank

mkdir -p $BANK_DIR;

if [ "$1" = "lock" ]; then
  if [ -e $BANK_DIR.tar.gz.gpg ]; then
    echo "$BANK_DIR already locked.";
    exit 1;
  fi
  echo "Locking $BANK_DIR...";
  (tar zcvf - -C $HOME .bank | gpg -c > $BANK_DIR.tar.gz.gpg) &&
      rm -r $BANK_DIR;
elif [ "$1" = "unlock" ]; then
  echo "Unlocking $BANK_DIR...";
  (gpg --decrypt $BANK_DIR.tar.gz.gpg | tar -xzf - -C $HOME) &&
      rm $BANK_DIR.tar.gz.gpg;
else
  echo "Commands: lock, unlock";
fi