upstart meteor node npm bcrypt invalid elf header fix

bcrypt_fix.sh

#!/bin/bash

# if when looking in /var/log/upstart/yourapp.log, you find the error:

# Error: /home/yourapp/bundle/programs/server/npm/npm-bcrypt/node_modules/bcrypt/build/Release/bcrypt_lib.node: invalid ELF header
#    at Error (native)
#    at Module.load (module.js:355:32)
#    at Function.Module._load (module.js:310:12)
#    at Module.require (module.js:365:17)
#    at require (module.js:384:17)
#    at bindings (/home/yourapp/bundle/programs/server/npm/npm-bcrypt/node_modules/bcrypt/node_modules/bindings/bindings.js:74:15)
#    at Object.<anonymous> (/home/yourapp/bundle/programs/server/npm/npm-bcrypt/node_modules/bcrypt/bcrypt.js:3:35)
#    at Module._compile (module.js:460:26)
#    at Object.Module._extensions..js (module.js:478:10)
#    at Module.load (module.js:355:32)

# this may fix it:

appDir=todos
rm -rf /home/$appDir/bundle/programs/server/npm/npm-bcrypt/node_modules/bcrypt
cd /home/$appDir/bundle/programs/server
npm install bcrypt
cp -r /home/$appDir/bundle/programs/server/node_modules/bcrypt /home/$appDir/bundle/programs/server/npm/npm-bcrypt/node_modules/bcrypt/