From: Josh Vermaas (
Date: Fri Feb 13 2015 - 08:10:20 CST

Hi Surya,

rlwrap is a utility that lets you use the terminal window VMD opens as a
window to input commands into. Its strictly speaking optional. VMD will
run just fine without it, but you'll need to use the tkConsole for
scripting (which is recommended anyway). If it bugs you, its just a
"sudo apt-get install rlwrap" to install it, although you may find that
it breaks VMD, since rlwrap on ubuntu and csh don't seem to play
together very well.

-Josh Vermaas

On 02/13/2015 03:56 AM, Seera Suryanarayana wrote:
> Dear vmd users
> I have installed LINUX_64 OpenGL, CUDA
> <> (Linux
> (RHEL 4.6 and later) on ubuntu 14.04 work station. I installed
> successfully, but when I prompt vmd command on terminal, it does not
> pope up graphical interface. And I it showing the following info.
> rlwrap: Command not found.
> Info) VMD for LINUXAMD64, version 1.9.2 (December 29, 2014)
> Info)
> Info) Email questions and bug reports to
> <>
> Info) Please include this reference in published work using VMD:
> Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> Info) -------------------------------------------------------------
> Info) Multithreading available, 16 CPUs detected.
> Info) Free system memory: 10821MB (67%)
> Info) Dynamically loaded 2 plugins in directory:
> Info) /usr/local/lib/vmd/plugins/LINUXAMD64/molfile
> Kindly tell us what could be the reason and give an idea how to solve it.
> Thanks in advance
> Surya
> Graduate student
> India.