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Full Discussion: Sed Tricks
Top Forums UNIX for Dummies Questions & Answers Sed Tricks Post 302363301 by zaxxon on Tuesday 20th of October 2009 02:51:42 AM
Old 10-20-2009
Code:
echo "old gold old" | sed 's/\<old\>/new/g'
new gold new

Inside < and > you can define a "word" in RegExp. Have to escape them with \ though.
 

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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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