My raspberrypi is not connecting to internet.
I am trying to connect it to laptop internet through ethernet but its not working.
sudo ifdown eth0 && sudo ifup eth0
ifdown: interface eth0 not configured
SIOCADDRT: File exists
Failed to bring up eth0.
I have made following changes in interface and ifconfig output is also attached.
You obviously didn't read the contents of the interfaces file, before modifying it.
# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf
See How to set up networking/WiFi which contains default files for Jessie and Stretch, although in Stretch the interfaces file does nothing and can be deleted.
The following describes How to set up Static IP Address
In addition there is NO POINT in including bash commands in interfaces
