www.geekytuts.net

This is how you can install Drush locally and make drush command localy on specific user.

• First go to root directory of user and login with this user

  [root@da ~]# cd /home/mydrush/
  [root@da mydrush]# su mydrush

• Install drush via composer

  [mydrush@da mydrush]$ composer require drush/drush
  Using version ^10.4 for drush/drush
  ./composer.json has been created
  Running composer update drush/drush
  Loading composer repositories with package information
  Updating dependencies
  ...

• Create alias to drush for this user. Open file .bashrc and add line bellow to it and save. Then run source.

  # User specific environment and startup programs
  export PATH="$HOME/vendor/bin:$PATH"
  
  [mydrush@da mydrush]$ source .bashrc
  

• This is it

  [mydrush@da mydrush]$ drush version
  Drush version : 10.4.3

Special thanks to Adrian