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Advice using cut & echo combination commands

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# 1  
Old 07-27-2010
Question Advice using cut & echo combination commands

I am cutting data from a fixed length test file and then writing out a new record using the echo command, the problem I have is how to stop multiple spaces from being written to the output file as a single space.
cat filea | while read line
  field1=`echo $line | cut -c1-2`
  field2=`echo $line | cut -c10-20`
  field3=`echo $line | cut -c21-35`
  echo $field1$field2$field3 >>outfile

Both field2 & field3 contain variable length text, the unused portion being space filled.


Last edited by dc18; 07-27-2010 at 06:47 PM.. Reason: Please indent your code and use code tags
# 2  
Old 07-27-2010

Post your sample input file and expected output.
# 3  
Old 07-27-2010
file in / file out

If input record is
123456789EXAMPLE    DESCRIPTION    1234

I want

(with 3 spaces betwee EXAMPLE & DESCRIPTION & 4 spaces at end)

but I get

(with 1 space between EXAMPLE & DESCRIPTION & 1 space at end)

ie multiple spaces are automatically reduced to 1 space !

Last edited by vgersh99; 07-27-2010 at 06:56 PM.. Reason: code tags, please!
# 4  
Old 07-27-2010
nawk '{print substr($0,1,2) substr($0,10,10) substr($0, 21,14)}' filea > outfile

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# 5  
Old 07-27-2010

Originally Posted by dc18
the problem I have is how to stop multiple spaces from being written to the output file as a single space.
Just add quotes to the last echo
 echo "$field1$field2$field3" >>outfile

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# 6  
Old 07-27-2010
while read -r LINE
  echo "${LINE:0:2}${LINE:9:10}${LINE:20:35}"
done <"file"

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# 7  
Old 07-27-2010
reserve the spaces before and after DESCRIPTION.

echo "123456789EXAMPLE    DESCRIPTION    1234" |cut -c1-2,10-35


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