jvncviewer -V (return code: -15)
--version 5900
Exception in thread "main" java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.desktop/java.applet.Applet.<init>(Applet.java:73)
at vncviewer.<init>(vncviewer.java:29)
at vncviewer.main(vncviewer.java:40)
jvncviewer --help (return code: 0)
USAGE: jvncviewer HOST[:(DISPLAY#|:PORT#)]