$ sudo wireshark &
[1] 28262
$ sudo: wireshark: command not found


[1]+ Exit 1 sudo wireshark


$ which wireshark


$ uname -a
Linux Microknoppix 4.7.9-64 #19 SMP PREEMPT Sat Oct 22 02:39:01 CEST 2016 x86_64 GNU/Linux