mininet> r1 xterm Warning: This program is an suid-root program or is being run by the root user. The full text of the error or warning message cannot be safely formatted in this environment. You may get a more descriptive message by running the program as a non-root user or by removing the suid bit on the executable. xterm: Xt error: Can't open display: %s xterm: DISPLAY is not set mininet> h1 echo $DISPLAY mininet> xterm h1 Error: Cannot connect to display mininet> h1 xterm & mininet>
root@ubuntu:/data1/root/ryu/SDN-IP-Ryu# whereis xterm xterm: /usr/bin/xterm /usr/share/man/man1/xterm.1.gz root@ubuntu:/data1/root/ryu/SDN-IP-Ryu#
# xterm Warning: This program is an suid-root program or is being run by the root user. The full text of the error or warning message cannot be safely formatted in this environment. You may get a more descriptive message by running the program as a non-root user or by removing the suid bit on the executable. xterm: Xt error: Can't open display: %s xterm: DISPLAY is not set
root@ubuntu:/data1/root/ryu/SDN-IP-Ryu# mn -x *** No default OpenFlow controller found for default switch! *** Falling back to OVS Bridge *** Creating network *** Adding controller *** Adding hosts: h1 h2 *** Adding switches: s1 *** Adding links: (h1, s1) (h2, s1) *** Configuring hosts h1 h2 Error starting terms: Cannot connect to display *** Starting controller *** Starting 1 switches s1 *** Starting CLI: mininet> quit *** Stopping 0 controllers *** Stopping 1 switches s1 .. *** Stopping 2 links *** Stopping 2 hosts h1 h2 *** Done completed in 21.936 seconds