Need to edit in a desk file

Frappe Framework Customization
1

i want some customization in desk file can anyone tell me the location of desk file

2

A search like this will help - py run on the server while js are found on the browser client side:

frappe@ubuntu:~/frappe-bench$ find . -name '*desk*.py'
./apps/erpnext/erpnext/patches/v11_0/change_healthcare_desktop_icons.py
./apps/erpnext/erpnext/config/desktop.py
./apps/frappe/frappe/www/desk.py
./apps/frappe/frappe/patches/v7_0/desktop_icons_hidden_by_admin_as_blocked.py
./apps/frappe/frappe/patches/v6_24/sync_desktop_icons.py
./apps/frappe/frappe/patches/v8_0/fix_non_english_desktop_icons.py
./apps/frappe/frappe/patches/v8_0/update_desktop_icons.py
./apps/frappe/frappe/config/desktop.py
./apps/frappe/frappe/config/desk.py
./apps/frappe/frappe/desk/doctype/desktop_icon/desktop_icon.py
./apps/frappe/frappe/desk/doctype/desktop_icon/test_desktop_icon.py
./apps/frappe/frappe/desk/desk_page.py
./apps/frappe/frappe/core/page/desktop/desktop.py