Linux anywhereusbmanager LIST gives Error: Unable to initialize GTK+, is DISPLAY set properly?

Issue/Question (for FAQ and Troubleshooting articles Only)

After instaling the Linux AnywhereUSB Plus driver and AnywhereUSB Manager from Debian amd64 package and following the install instructions, entering the commands, might result into:

$ awusbmanager LIST

root@eftcanliworker1:/tmp#11:09:08: Error: Unable to initialize GTK+, is DISPLAY set properly?

root@host:/tmp#11:09:08: Error: Unable to initialize GTK+, is DISPLAY set properly?

Solution

If your Linux system was installed with graphical window or GTK capabilities:

set the environment variable with sh and bash:

export DISPLAY:=0.0

when using csh and tcsh use:

setenv DISPLAY :0.0

if your Linux system has no graphical capabilities called "headless" or command line only:

install the headless amd64 package and run:

$ awusbmanager-headless list

if in the local network no hubs are found (UDP 5353 is open in firewall), check if the certificates are correctly installed:

$ awusbmanager-headless certificate list