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OpenSolaris 2009.06 - man page for tsort (opensolaris section 1)

tsort(1)					    User Commands					     tsort(1)

NAME
tsort - topological sort
SYNOPSIS
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 (non-empty strings) separated by blanks. Pairs of different items indi- cate 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: example% 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: LANG, LC_ALL, 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 | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+
SEE ALSO
lorder(1), attributes(5), environ(5), standards(5)
DIAGNOSTICS
Odd data: there are an odd number of fields in the input file. SunOS 5.11 28 Jun 2007 tsort(1)


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