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Full Discussion: Help with splitting lines in a file using awk
Top Forums UNIX for Advanced & Expert Users Help with splitting lines in a file using awk Post 10644 by Perderabo on Monday 19th of November 2001 08:39:36 AM
Old 11-19-2001
The fold command can do this. The only problem is that your input file must have a newline character as the last character. If it doesn't already have one, you can do "echo >> datafile" to add one. Then you can use fold like this:
fold -w40 datafile
 

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LEARN ABOUT NETBSD

fold

FOLD(1) 						    BSD General Commands Manual 						   FOLD(1)

NAME

     fold -- fold long lines for finite width output device

SYNOPSIS

     fold [-bs] [-w width] [file ...]

DESCRIPTION

     fold is a filter which folds the contents of the specified files, or the standard input if no files are specified, breaking the lines to have
     a maximum of 80 characters.

     The options are as follows:

     -b 	 Count width in bytes rather than column positions.

     -s 	 Fold line after the last blank character within the first width column positions (or bytes).

     -w width	 Specifies width to use as a line width, instead of the default 80 characters.

ENVIRONMENT

     LC_CTYPE

EXIT STATUS

     The fold utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     expand(1), fmt(1)

STANDARDS

     The fold utility conforms to IEEE Std 1003.1-2008 (``POSIX.1'').

BUGS

     If underlining is present it may be messed up by folding.

     Width should be a multiple of 8 if tabs are present, or the tabs should be expanded using expand(1) before using fold.

BSD
								September 15, 2011							       BSD
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