I could not use sudo function in my rasbian and when i try to update or upgrade using my terminal i am incurring following error
pi@raspberrypi:~ $ sudo sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set pi@raspberrypi:~ $ apt-get update Err http://archive.raspberrypi.org jessie InRelease Err http://archive.raspberrypi.org jessie Release.gpg Could not resolve 'archive.raspberrypi.org'
Following is the result of permissions for Sudo
pi@raspberrypi:~ $ ls -l /usr/bin/sudo -rwxr-xr-x 1 pi pi 139584 Jan 11 2016 /usr/bin/sudo
kindly let me know what is the issue with my Raspberry