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This is unlikely to change since if ping changes many programs would broke. It is kinda like ipconfig. AFAIK, ping is a setuid binary (since it needs raw socke

by m45t3r 6y ago

This is unlikely to change since if ping changes many programs would broke. It is kinda like ipconfig. AFAIK, ping is a setuid binary (since it needs raw socket, that is a privileged operation) so a program that implements ping by itself would need to do the same (or it would work for root).

treve 6y ago
Weird! Not setuid on my ubuntu machine.
- jandrese 6y ago
  It is on my Ubuntu 18.04.5 LTS machine: -rwsr-xr-x 1 root root 64424 Jun 28 2019 /bin/ping
  - treve 6y ago
    No longer on 20.10. Curious why it's different: -rwxr-xr-x 1 root root 76744 Aug 23 15:08 /bin/ping
    - jandrese 6y ago
      Checked an Ubuntu 20 machine and you're right. Instead ping has an extended attribute: % getcap /bin/ping /bin/ping = cap_net_raw+ep
- unionpivo 6y ago
  It's because of linux capabilities specificly CAP_NET_RAW How to check: $ getcap $(which ping) /usr/bin/ping = cap_net_raw+ep More about it on [1] https://blog.container-solutions.com/linux-capabilities-in-practice https://blog.container-solutions.com/linux-capabilities-in-p...
jlgaddis 6y ago
Nowadays, the CAP_NET_RAW "capability" allows opening raw sockets by unprivileged users and without making binaries setuid.
oarsinsync 6y ago
> It is kinda like ipconfig. I assumed you were talking about windows until: > AFAIK, ping is a setuid binary Which unfortunately means you’ve partly helped make the GP’s point for them. Under Linux, the command you’re thinking of is ifconfig, which has long been deprecated and doesn’t ship by default anymore in newer distributions. Times change, tools move on.