03-31-2008
You have been reading shell programming tutorials (and possibly C shell, if they advice round parentheses in the if -- that's different from Bourne shell, sort of like Java is quite unlike JavaScript, although not quite as unrelated) but the program you have written is in the awk language, which is not at all the same thing. Compare to how you can use a DLL written in another language from a C program. But with scripts, the source can be in two different languages, and often is -- you frequently put small awk or sed or Perl or TCL or ... other scripts in shell scripts where the shell's own syntax or facilities don't match the problem space well enough.
The Perl program does what I imagine your spec says it should do. Try it and see. It replaces multiples of 119 charactes or less followed by a space or a comma with the same string plus a backslash and a newline. You could do the same in sed or awk, albeit not quite as succinctly; the main concept here is a regular expression, which is a facility all of these languages provide. (I think you have it in VB, too, and there are C libraries you can link to if you like.) Read up on that, it's an extremely useful and versatile tool, quite independent of any particular language.
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LEARN ABOUT NETBSD
rcorder
RCORDER(8) BSD System Manager's Manual RCORDER(8)
NAME
rcorder -- print a dependency ordering of interdependent files
SYNOPSIS
rcorder [-k keep] [-s skip] file ...
DESCRIPTION
rcorder is designed to print out a dependency ordering of a set of interdependent files. Typically it is used to find an execution sequence
for a set of shell scripts in which certain files must be executed before others.
Each file passed to rcorder should be annotated with special lines (which look like comments to the shell) which indicate the dependencies
the files have upon certain points in the sequence, known as ``conditions'', and which indicate, for each file, which ``conditions'' may be
expected to be filled by that file.
Within each file, a block containing a series of ``REQUIRE'', ``PROVIDE'', ``BEFORE'' and ``KEYWORD'' lines should appear. The format of the
lines is rigid. Each line must begin with a single ``#'', followed by a single space, followed by ``PROVIDE:'', ``REQUIRE:'', ``BEFORE:'',
or ``KEYWORD:''. No deviation is permitted. Each dependency line is then followed by a series of conditions, separated by whitespace. Mul-
tiple ``PROVIDE'', ``REQUIRE'', ``BEFORE'' and ``KEYWORD'' lines may appear, but all such lines must appear in a sequence without any inter-
vening lines, as once a line that does not follow the format is reached, parsing stops.
The options are as follows:
-k Add the specified keyword to the ``keep list''. If any -k option is given, only those files containing the matching keyword are
listed.
-s Add the specified keyword to the ``skip list''. If any -s option is given, files containing the matching keyword are not listed.
An example block follows:
# REQUIRE: networking syslog
# REQUIRE: usr
# PROVIDE: dns nscd
This block states that the file in which it appears depends upon the ``networking'', ``syslog'', and ``usr'' conditions, and provides the
``dns'' and ``nscd'' conditions.
A file may contain zero ``PROVIDE'' lines, in which case it provides no conditions, and may contain zero ``REQUIRE'' lines, in which case it
has no dependencies. A file containing no ``PROVIDE'', ``REQUIRE'', or ``BEFORE'' lines may be output at an arbitrary position in the depen-
dency ordering.
There must be at least one file with no dependencies in the set of arguments passed to rcorder in order for it to find a starting place in
the dependency ordering.
DIAGNOSTICS
rcorder may print one of the following error messages and exit with a non-zero status if it encounters an error while processing the file
list.
Requirement %s has no providers, aborting. No file has a ``PROVIDE'' line corresponding to a condition present in a ``REQUIRE'' line in
another file.
Circular dependency on provision %s, aborting. A set of files has a circular dependency which was detected while processing the stated con-
dition.
Circular dependency on file %s, aborting. A set of files has a circular dependency which was detected while processing the stated file.
SEE ALSO
rc(8)
HISTORY
The rcorder program first appeared in NetBSD 1.5.
AUTHORS
Written by Perry E. Metzger <perry@piermont.com> and Matthew R. Green <mrg@eterna.com.au>.
BSD
April 23, 2003 BSD