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BSD 2.11 - man page for tsort (bsd section 1)

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TSORT(1)										 TSORT(1)

NAME
       tsort - topological sort

SYNOPSIS
       tsort [ file ]

DESCRIPTION
       Tsort  produces	on  the standard output a totally ordered list of items consistent with a
       partial ordering of items mentioned in the input file.  If no file is specified, the stan-
       dard input is understood.

       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.

SEE ALSO
       lorder(1)

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

BUGS
       Uses a quadratic algorithm; not worth fixing for the typical use of ordering a library ar-
       chive file.

7th Edition				  April 29, 1985				 TSORT(1)
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