NAME
pathmerge − merge sorted paths files
SYNOPSIS
/usr/lib/smail/pathmerge file ...
DESCRIPTION
Pathmerge takes a set of sorted path files, as produced by pathalias(8), and generates on the standard output a merge of the path information, with one path given for each hostname. Precedence for paths goes to the files given earlier in the argument list. One of the filenames given in the argument list can be − to specify the standard input.
As an example of the use of pathmerge, let’s say that we have two files, forces and paths, whose contents are, respectively:
|
ihnp4 | ||
|
cbosgd!ihnp4!%s | ||
|
muts12 | ||
|
muts12!%s | ||
|
sun | ||
|
sun!%s |
and
|
cbosgd | ||
|
cbosgd!%s | ||
|
ihnp4 | ||
|
ihnp4!%s | ||
|
sun | ||
|
ames!sun!%s | ||
|
uunet | ||
|
uunet!%s |
The command ’’pathmerge forces paths’’ will produce on the standard output:
|
cbosgd | ||
|
cbosgd!%s | ||
|
ihnp4 | ||
|
cbosgd!ihnp4!%s | ||
|
muts12 | ||
|
muts12!%s | ||
|
sun | ||
|
sun!%s | ||
|
uunet | ||
|
uunet!%s |
For the purposes of pathmerge, a hostname is terminated by either a space, a tab, a colon or a newline. The number of file arguments is limited by the number of available file descriptors, as all of the files are opened and read simultaneously.
SEE ALSO
mkline(8), mksort(8), mkdbm(8), smail(5), smail(8), mkpath (8) and pathalias(8).
COPYRIGHT
Copyright(C)1987,
1988 Ronald S. Karr and Landon Curt Noll
Copyright(C)1992 Ronald S. Karr
See a file COPYING, distributed with the source code,
or type smail -bc, to view distribution rights and
restrictions associated with this software.