Cannot install brew

[Etienne-TR]

$ ujust install-brew
Brew Installation
Please IGNORE everything the installer tells you to do at the end
We have already done it for you! You just need to close and re-open the terminal after installation
Do you understand?
Please type in "YES I UNDERSTAND" and press enter
YES I UNDERSTAND
==> Checking for `sudo` access (which may request your password)...
[sudo] Mot de passe de etienne : 
==> This script will install:
/home/linuxbrew/.linuxbrew/bin/brew
/home/linuxbrew/.linuxbrew/share/doc/homebrew
/home/linuxbrew/.linuxbrew/share/man/man1/brew.1
/home/linuxbrew/.linuxbrew/share/zsh/site-functions/_brew
/home/linuxbrew/.linuxbrew/etc/bash_completion.d/brew
/home/linuxbrew/.linuxbrew/Homebrew

Press RETURN/ENTER to continue or any other key to abort:
==> /usr/bin/sudo /bin/chown -R etienne:etienne /home/linuxbrew/.linuxbrew/Homebrew
==> Downloading and installing Homebrew...
remote: Enumerating objects: 5, done.
remote: Counting objects: 100% (5/5), done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 5 (delta 3), reused 5 (delta 3), pack-reused 0 (from 0)
Error: Can't create `brew update` lock in /home/linuxbrew/.linuxbrew/var/homebrew/locks!
Fix permissions by running:
  sudo chown -R etienne /home/linuxbrew/.linuxbrew/var/homebrew
Failed during: /home/linuxbrew/.linuxbrew/bin/brew update --force --quiet
error: Recipe `install-brew` failed with exit code 1

[RoyalOughtness]

strange. did you rebase from a system that already had brew?

and did the permissions command work?