---
name: "nauty-showg"
section: "1"
platform: "linux"
package: "nauty"
version: "2.8.9+ds-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/nauty-showg"
---

# nauty-showg(1)

(stand-alone subset of listg)

## NAME

nauty-showg - (stand-alone subset of listg)

## SYNOPSIS

**showg** \[*-p#:#l#o#Ftq*\] \[*-a\|-A\|-c\|-d\|-e*\] \[*infile* \[*outfile*\]\]

## DESCRIPTION

-

  Write graphs in human-readable format.

-

  infile is the input file in graph6, sparse6 or digraph6 format

-

  This program does not support incremental sparse6 files; use listg.

-

  outfile is the output file Defaults are standard input and standard output.

**-p**#, **-p**#:#, **-p**#-# : only display one graph or a sequence of

- graphs.

  The first graph is number 1.  A second number

-

  which is empty or zero means infinity.

- **-a**

  : write the adjacency matrix

- **-A**

  : same as **-a** with a space between entries

- **-d**

  : write output to satisfy dreadnaut

- **-c**

  : write compact dreadnaut form with minimal line-breaks

- **-e**

  : write a list of edges, preceded by the order and the

-

  number of edges

**-o**# : specify number of first vertex (default is 0)

- **-t**

  : write upper triangle only (affects **-a**, **-A**, **-d** and default)

- **-F**

  : write a form-feed after each graph except the last

**-l**# : specify screen width limit (default 78, 0 means no limit)

-

  This is not currently implemented with **-a** or **-A**.

- **-q**

  : suppress auxiliary output

**-a**, **-A**, **-c**, **-d** and **-e** are incompatible.