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Full Discussion: Splitting the line in multiple lines
Top Forums Shell Programming and Scripting Splitting the line in multiple lines Post 302180571 by era on Monday 31st of March 2008 01:54:59 PM
Old 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 REDHAT

fmt

FMT(1)									FSF								    FMT(1)

NAME

       fmt - simple optimal text formatter

SYNOPSIS

       fmt [-DIGITS] [OPTION]... [FILE]...

DESCRIPTION

       Reformat each paragraph in the FILE(s), writing to standard output.  If no FILE or if FILE is `-', read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -c, --crown-margin
	      preserve indentation of first two lines

       -p, --prefix=STRING
	      combine only lines having STRING as prefix

       -s, --split-only
	      split long lines, but do not refill

       -t, --tagged-paragraph
	      indentation of first line different from second

       -u, --uniform-spacing
	      one space between words, two after sentences

       -w, --width=NUMBER
	      maximum line width (default of 75 columns)

       --help display this help and exit

       --version
	      output version information and exit

       In -wNUMBER, the letter `w' may be omitted.

AUTHOR

       Written by Ross Paterson.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The full documentation for fmt is maintained as a Texinfo manual.  If the info and fmt programs are properly installed at  your	site,  the
       command

	      info fmt

       should give you access to the complete manual.

fmt (coreutils) 4.5.3						   February 2003							    FMT(1)
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