update installed brew packages and push brew_packes to git, to get it work, your need to install "brew tap buo/cask-upgrade"

brew_packages.sh

#!/bin/bash

dateValue=''
newDate=$(date +"%m_%d_%Y")
if [ -f /tmp/brew_update_date.txt ]; then
	dateValue=$(</tmp/brew_update_date.txt)
fi

if [ ! -f /tmp/brew_upgrade.lock ]; then
  touch /tmp/brew_upgrade.lock
  export HOMEBREW_GITHUB_API_TOKEN=<put your token here>
  #check for connection

  if [ "$dateValue" != "$newDate" ]; then
  	echo -e "\033[35m### Prepare 'brew' and 'brew cask' for updates ###\033[0m"
  	sudo /bin/rm -rf "$(brew --cache)"
  	/usr/local/bin/brew cleanup
  	echo ""
  	echo -e "\033[35m### Upgrade 'brew' packages ###\033[0m"
  	/usr/local/bin/brew update
  	/usr/local/bin/brew upgrade
  	echo -e "\033[35m### Upgrade 'brew cask' packages ###\033[0m"
  	echo ""
  	/usr/local/bin/brew cu -ay
  	date +"%m_%d_%Y" > /tmp/brew_update_date.txt
  else
  	echo -e "\033[35m### 'brew' and 'brew cask' already updated today ###\033[0m"
  	echo ""
  fi

  echo "# brew packet list" > ~/dev/osx-dotfiles/brew_packages
  for i in $(brew list); do
   echo "brew install $i" >> ~/dev/osx-dotfiles/brew_packages
  done

  echo "# brew cask list" >> ~/dev/osx-dotfiles/brew_packages
  for i in $(brew cask list); do
   echo "brew cask install $i" >> ~/dev/osx-dotfiles/brew_packages
  done

  cd ~/dev/osx-dotfiles/
  find . -name '.[a-z]*' -not -path "./.git" -not -path "./.git/*" -not -path "./.idea" -not -path "./.idea/*" -exec git add '{}' ';'
  git add .
  git commit -m "add new/changed files"
  git push >/dev/null 2>&1
  cd ~
  rm -f /tmp/brew_upgrade.lock
else
  echo "another brew upgrade is running"
fi