To make a long story short:
linaro@linaro-alip:~$ sudo chmod 4755 /bin/ping
And now for the long story:
After the initial setup of my ASUS Tinkerboard and adding it to my local network by using an attached monitor, keyboard and mouse I managed to get it onto my local network so I could SSH into it and remove the monitor etc. from the setup again (btw. the default username/password combination is linaro/linaro).
Using the ping command (after I had SSH’ed into the tinkerboard) gave me the following error:
linaro@linaro-alip:~$ ping google.com ping: icmp open socket: Operation not permitted
Checking the permission bits of the ping command
linaro@linaro-alip:~$ ls -al /bin/ping -rwxr-xr-x 1 root root 34752 Nov 8 2014 /bin/ping
showed that it just had normal execution rights, this could be easily fixed with:
linaro@linaro-alip:~$ sudo chmod 4755 /bin/ping
After this command the execution rights were fixed and it was possible to use the ping command:
linaro@linaro-alip:~$ ls -al /bin/ping -rwsr-xr-x 1 root root 34752 Nov 8 2014 /bin/ping linaro@linaro-alip:~$ ping google.com PING google.com (216.58.201.174) 56(84) bytes of data. 64 bytes from arn02s06-in-f14.1e100.net (216.58.201.174): icmp_seq=1 ttl=57 time=33.7 ms 64 bytes from arn02s06-in-f14.1e100.net (216.58.201.174): icmp_seq=2 ttl=57 time=34.0 ms 64 bytes from arn02s06-in-f14.1e100.net (216.58.201.174): icmp_seq=3 ttl=57 time=33.9 ms 64 bytes from arn02s06-in-f14.1e100.net (216.58.201.174): icmp_seq=4 ttl=57 time=33.8 ms ^C --- google.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3005ms rtt min/avg/max/mdev = 33.748/33.920/34.058/0.174 ms linaro@linaro-alip:~$
I don’t know if it was this or some other issue, but this change also seems to have fixed the issues I had with running “sudo apt update”.