TSORT(1) General Commands Manual TSORT(1)NAME
tsort - topological sort [IBM]
SYNOPSIS
tsort file
EXAMPLES
lorder *.s | tsort # Give library ordering
ar cr libc.a `lorder *.s | tsort`
# Build library
DESCRIPTION
Tsort accepts a file of lines containing ordered pairs and builds a total ordering from the partial orderings.
TSORT(1)
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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 indicate ordering. Pairs of identi-
cal 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_MES-
SAGES, 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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