tsort(1)

NAME | SYNOPSIS | DESCRIPTION | OPERANDS | EXAMPLES | ENVIRONMENT VARIABLES | EXIT STATUS | ATTRIBUTES | SEE ALSO | DIAGNOSTICS

NAME

tsort- topological sort

SYNOPSIS

/usr/ccs/bin/tsort [file]

DESCRIPTION

The tsort command produces on the standard output a totally ordered list of items consistent with a partial ordering of items mentioned in the input file.

The input consists of pairs of items (nonempty strings) separated by blanks. Pairs of different items indicate ordering. Pairs of identical items indicate presence, but not ordering.

OPERANDS

The following operand is supported:

file

A path name of a text file to order. If no file operand is given, the standard input is used.

EXAMPLES

---

Example 1 An example of the tsort command.




The command:

tsort <<EOF a b c c d e g g f g e f EOF

produces the output:

a b c d e f g

---

ENVIRONMENT VARIABLES

See environ(5) for descriptions of the following environment variables that affect the execution of tsort: LC_CTYPE, LC_MESSAGES, and NLSPATH.

EXIT STATUS

The following exit values are returned:

0

Successful completion.

>0

An error occurred.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWbtool

SEE ALSO

lorder(1), attributes(5), environ(5)

DIAGNOSTICS

Odd data: there are an odd number of fields in the input file.

SunOS 5.8  Last Revised 1 Feb 1995

NAME | SYNOPSIS | DESCRIPTION | OPERANDS | EXAMPLES | ENVIRONMENT VARIABLES | EXIT STATUS | ATTRIBUTES | SEE ALSO | DIAGNOSTICS