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SED: How to replace all occurances of multiple whitespace with a single whitespace?

Posted on 2004-03-24
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Last Modified: 2013-12-26
Hi,

I have a file with a single line of text in it, but the thing generating it puts large chunks of spaces throughout the line. Is there a regex format I can use with SED to replace all of these whitespace chunks with a single space?

Thanks
Scott
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Question by:scurtis_1
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6 Comments
 
LVL 45

Expert Comment

by:sunnycoder
ID: 10666990
Hi scurtis_1,

sed 's/ */ /g' filename


Sunnycoder
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sunnycoder earned 150 total points
ID: 10667001
above will insert single space after each char ...

sed 's/  */ /g' filename

will replace one or more space characters with a single space character (notice extra space char after first / )
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LVL 9

Expert Comment

by:HamdyHassan
ID: 10668652
As sunnycoder said, but make sure there is TWO SPACES before *

sed 's/<SPACE><SPACE>*/ /g' filename
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Assisted Solution

by:Vinit Kain
Vinit Kain earned 100 total points
ID: 10670206
hi,

sed 's/[<space><tab>][<space><tab>]*/ /g' filename

will replace multiple white space to single space

Vinit
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Expert Comment

by:ahoffmann
ID: 10675524
being pedantic, whitespace  also contains newline and carriage return
Do you mean that too?
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Author Comment

by:scurtis_1
ID: 10676399
Initially I meant just space characters but I have now included all newline and carriage return characters for my particular problem.

scott
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