Give permission to edit file Ubuntu LINUX

       sudo chown vijay /etc/hosts

       sudo chown <username> <file or Directory>

Image not showing up for src=/resources/images/show_logo.gif (using HTML code ) ADF App on Weblogic

try ../../show_logo.gif  instead of src=/resources/images/show_logo.gif 

• / is the root of the current drive;
• ./ is the current directory;
• ../ is the parent of the current directory.