SHELL

install homebrew on ubuntu

git clone https://github.com/Homebrew/brew ~/.linuxbrew/Homebrew
mkdir ~/.linuxbrew/bin
ln -s ~/.linuxbrew/Homebrew/bin/brew ~/.linuxbrew/bin
eval $(~/.linuxbrew/bin/brew shellenv)

homebrew install in ubuntu

sudo apt update
sudo apt-get install build-essential
sudo apt install git -y
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
brew doctor
brew install gcc
echo "done"

ubuntu install brew

test -d ~/.linuxbrew && eval $(~/.linuxbrew/bin/brew shellenv)
test -d /home/linuxbrew/.linuxbrew && eval $(/home/linuxbrew/.linuxbrew/bin/brew shellenv)
test -r ~/.bash_profile && echo "eval $($(brew --prefix)/bin/brew shellenv)" >>~/.bash_profile
echo "eval $($(brew --prefix)/bin/brew shellenv)" >>~/.profile