---
name: "evolver-nox-d"
section: "1"
platform: "linux"
package: "evolver-nox"
version: "2.70+ds-8+b2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/evolver-nox-d"
---

# evolver-nox-d(1)

The Surface Evolver program with no X support and double precision floating point format

## NAME

evolver-nox-d - The Surface Evolver program with no X support and double precision floating point format

## SYNOPSIS

**evolver-nox-d** \[*-a*\]\[*-d*\]\[*-e*\]\[*-i*\]\[*-m*\]\[*-q*\]\[*-w*\]\[*-x*\]\[*-y*\]\[*-h*\]\[*-V*\] \[*-f FILE*\] \[*-pN*\] \[*DATAFILE*\]

## DESCRIPTION

The **Surface Evolver** is an interactive program for the modelling of liquid surfaces shaped by various forces and constraints. Basically the **Surface Evolver** minimizes the energy of triangulated surfaces according to designated energies and constraints.

This man page mainly documents command line options and environment variables.

## OPTIONS

- **-a**

  Autoconvert to named quantities when needed (default is on); use \`-a-' to deactivate autoconversion.

- **-d**

  Begin with parser debugging on (equivalent to \`debug' runtime command); beware of copious output.

- **-e**

  Echo stdin to stdout; meant for testing piped input.

- **-f** FILE

  After loading DATAFILE, read commands from file, then command line prompt.

- **-i**

  Preserve DATAFILE numbers for element id's, rather than renumbering.

- **-m**

  Begin with memory debugging on (equivalent to \`memdebug' runtime command); beware of copious output.

- **-pN**

  Run with N concurrent processes.

- **-q**

  Convert to named quantities at start (equivalent to \`convert\_to\_quantities' runtime command).

- **-w**

  Exit immediately after any warning or error message; meant for batch runs.

- **-x**

  Exit immediately after any error message; meant for batch runs.

- **-y**

  Break to user prompt after any warning message.

- **-h**

  Display this help, then exit.

- **-V**

  Display the version and the banner, then exit.

## AVAILABILITY

The latest version of the **Surface Evolver,** up-to-date documentation, and more are available on-line from:

    http://www.susqu.edu/brakke/evolver

## BANNER

Surface Evolver Version 2.70a (Debian 2.70+ds-8+b2), August 27, 2013, 64-bit. Compiled for double, 15 digits precision. Built with Geomview support.

## ENVIRONMENT

- EVOLVERPATH

  Colon-separated list of paths automatically searched for datafiles, included files, or on-line help documentation. By default, the paths */usr/share/doc/evolver/html* and */usr/share/doc/evolver/examples* are appended (in that order); this default behaviour can be cancelled by appending at least three consecutive colons (":::") at its end.

## FILES

*~/.evolver\_history*

Per user command history file.

*/usr/share/doc/evolver/manual.pdf*

The (complete) **Surface Evolver Manual** in PDF format.

*/usr/share/doc/evolver/EvolverDoc.html*

The HTML version of the **Surface Evolver Manual** that contains what the PDF manual has, modulo some advanced material.

*/usr/share/doc/evolver/examples/*

This folder contains sample material, mainly datafiles and command-files, for the **Surface Evolver.**

## AUTHOR

Ken Brakke \<brakke@susqu.edu\> has written and currently maintained the core part of the **Surface Evolver.** This man page was written for Debian by Jerome Benoit \<calculus@rezozer.net\>.

## REPORTING BUGS

Report bugs to Ken Brakke \<brakke@susqu.edu\>

## COPYRIGHT

Copyright © 1989-2016 Ken Brakke \<brakke@susqu.edu\>

## SEE ALSO

The complete manual for the **Surface Evolver** is available in PDF format in the documentation folder as */usr/share/doc/evolver/manual.pdf*.

[**geomview**(1)](/geomview/1.md), [**polymerge**(1)](/polymerge/1.md), [**anytooff**(1)](/anytooff/1.md), **oogl**(5), [**readline**(3)](/readline/3.md)