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Remove whitespaces in the n first characters?

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# 1  
Old 02-02-2011
Remove whitespaces in the n first characters?
I assume removing whitespaces in the n first characters of a string would be an easy task for sed? If so, how?
# 2  
Old 02-02-2011
Is this homework/classroom stuff? What have you tried so far?...

I got no idea for sed; nevertheless:
Code:
> cat infile
aa bb cc dd ee
$> awk '{a=substr($0,0,n); b=substr($0,n+1); gsub(/ /,"",a); print a b}' n=7 infile
aabbcc dd ee

... where n=7 is your nth field.
This User Gave Thanks to zaxxon For This Post:
KidCactus
# 3  
Old 02-02-2011
Hi,

Using 'sed' it is easy, yeah:
^ -> Begin of line (with one space after it)
\{n\} -> Number of spaces to supress.

Code:
$ sed -e 's/^ \{4\}//' infile

Regards,
Birei
# 4  
Old 02-02-2011
Quote:
Originally Posted by zaxxon
Is this homework/classroom stuff? What have you tried so far?...

I got no idea for sed; nevertheless:
Code:
> cat infile
aa bb cc dd ee
$> awk '{a=substr($0,0,n); b=substr($0,n+1); gsub(/ /,"",a); print a b}' n=7 infile
aabbcc dd ee

... where n=7 is your nth field.
Thanks, I will try that. Smilie
# 5  
Old 02-02-2011
Hi.

As seen in other threads, posting representative sample data and expected output is usually the shortest path to the best solutions ... cheers, drl
# 6  
Old 02-02-2011
I second what drl says and you still did not tell if this is homework/classroom stuff.
# 7  
Old 02-02-2011
Sorry.

After see the solution of zaxxon, mine was wrong. I missunderstood your question.

Regards,
Birei
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