acyclic - make directed graph acyclic
acyclic [ -nv? ] [ -o outfile ] [ file ]
ACYCLIC(1) General Commands Manual ACYCLIC(1)
NAME
acyclic - make directed graph acyclic
SYNOPSIS
acyclic [ -nv? ] [ -o outfile ] [ file ]
DESCRIPTION
acyclic is a filter that takes a directed graph as input and outputs a
copy of the graph with sufficient edges reversed to make the graph
acyclic. The reversed edge inherits all of the attributes of the origi-
nal edge. The optional file argument specifies where the input graph is
stored; by default, the program reads from stdin.
OPTIONS
The following options are supported:
-n No output is produced, though the return value will indicate
whether the graph is acyclic or not.
-v Print information about whether the file is acyclic, has a cycle
or is undirected.
-o outfile
causes the output to be written to the specified file; by
default, output is written to stdout.
-? option causes the program to print usage information.
RETURN CODES
acyclic returns 0 if the graph is acyclic; 1 if the graph has a cycle;
2 if the graph is undirected; and 255 if there are any errors.
BUGS
If the graph is strict and there is a cycle of length 2, the attributes
of the reversed edge are lost.
Some edge attributes are non-symmetric, referring to either the head or
tail node. At present, there is no mechanism or convention for cor-
rectly switching or renaming these.
AUTHORS
Stephen C. North <north@research.att.com>
Emden R. Gansner <erg@research.att.com>
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | image/graphviz |
+---------------+------------------+
|Stability | Volatile |
+---------------+------------------+
SEE ALSO
gc(1), dot(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1), lib-
graph(3)
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from http://gitlab.com/graphviz/graphviz/-/ar-
chive/2.47.1/graphviz-2.47.1.tar.gz.
Further information about this software can be found on the open source
community website at http://www.graphviz.org/.
21 March 2001 ACYCLIC(1)