Method 1 : Install and run drush as described in this article
This is the recommended method

Local bin folders
$HOME/.local/bin (~/.local/bin)
$HOME/bin (~/bin)

Add to path manually

PATH=$PATH:$HOME/.local/bin:$HOME/bin
export PATH

User specific environment and startup programs

Symptoms

You may have error messages like:

You can use IMCE to select a file.

Method 1 : Form hook_page_attachments