mtr is a very, very nice traceroute tool. There should be no reason to require root access to run it. In gentoo, mtr is located at /usr/sbin/mtr: -rwx--x--- 1 root root 89000 Aug 18 17:45 /usr/sbin/mtr This is in sbin, which isn't in normal user's path by default, and it's 0711, which means it can't be executed by normal users when it _is_ in path. Reproducible: Always Steps to Reproduce: 1. Log in as a normal user 2. mtr localhost 3. /usr/sbin/mtr localhost Actual Results: step 2: bash: mtr: command not found step 3: bash: /usr/sbin/mtr: Permission denied Expected Results: mtr should launch at step 3, if not step 2. On my ubuntu and debian boxes both, mtr is located at: (Ubuntu 11.04) -rwsr-xr-x 1 root root 52048 2010-10-15 11:36 /usr/bin/mtr (Debian 5) -rwsr-xr-x 1 root root 53224 2008-04-17 03:53 /usr/bin/mtr (Debian 6) -rwsr-xr-x 1 root root 57512 Sep 22 2008 /usr/bin/mtr
Actually, those permissions are 0710, not 0711. I'm guessing that you have the suid use flag disabled. Try enabling that to allow normal users to run it.
Ah, yup. I misread the permissions. And it looks like the suid USE flag is not enabled. In the middle of emerging chromium right now, and libreoffice and gimp follow in this update, but I'll try flipping the USE flag once those are done.
Enabling the suid flag set privs to 0711, and it works.
