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Old 01-30-2010, 04:44 AM   #1
carolflb
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Registered: Oct 2009
Posts: 40

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SED - how to remove blank spaces


Hi all,

I'm having a problem trying to erase blank space between characters. I have the following in a file:


sc_signal< bool> inTicks_vl;
sc_signal< bool> inTicks_vr;
sc_signal< bool > inTicks_hl;
sc_signal< bool > inTicks_hr;


There I have normal spaces and tabs between the characters. So I tried to use:

sed -i 's/<\ *\([^ ]*\)\ *>\ *\([^ ]*\);/<\1>\2;/' file
sed -i 's/<\t *\([^ ]*\)\t *>\t *\([^ ]*\);/<\1>\2;/' file


So that my file would look like this (no spaces in between the words):


sc_signal<bool>inTicks_vl;
sc_signal<bool>inTicks_vr;
sc_signal<bool>inTicks_hl;
sc_signal<bool>inTicks_hr;


But the problem is that those commands just delete all tabs or all spaces until they find something else. That means, if in one line I have:

Word<SpaceTabTabSpaceSpaceWordSpaceTabSpace>TabSpaceTabWord;

The result is:

Word<SpaceSpaceWordSpace>SpaceTabWord;


Does somebody know a way to make it look like:

Word<Word>Word; at the end?
 
Old 01-30-2010, 05:32 AM   #2
carltm
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Registered: Jan 2007
Location: Canton, MI
Distribution: CentOS, SuSE, Red Hat, Debian, etc.
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Try this: sed -i 's/[ Tab][ Tab]*//g' file

Obviously I can't type a tab character into a web form. Just
type a space and a tab between each of the square braces.
 
Old 01-30-2010, 06:02 AM   #3
carolflb
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Registered: Oct 2009
Posts: 40

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Hi carltm!

many thanks for the solutions. It works
 
  


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