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Substring not working if more than 1 space

 
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# 1  
Old 08-22-2008
Substring not working if more than 1 space
I have a string which is something like this..

abcd efghijkl

when I use this using substring() function 2 spaces are bein considered as one starngely.

Is there any thing I am doing wroing

the input file maintest has the string specified and the code is below


while read lines
do
echo $lines | awk '{print substr($0,4,3)}'

done < maintest

the output is
d e

where as it should be 'd ' d followed by 2 blank spaces.

Please suggest
thanks
# 2  
Old 08-22-2008
Your code works if there is more than one space. Maybe the problem is that you're testing with echo and if you do echo word1<space><space>word2 the output will be "word1<space>word2". If you want echo to output more than one space use ", echo "word1<space><space>word2".
# 3  
Old 08-22-2008
perfect !!

just replaced

echo $line with echo "$line" | awk '{print substr($0,4,3)}'


Thanks a lot..


# 4  
Old 08-22-2008
No problem. That happened because despite how many spaces you type, the number of arguments is the same and echo only cares about arguments (which are then separated by a single space).

Code:
echo one        two

Those are two arguments "one" and "two".
Code:
echo "one      two"

That is one argument "one two".

Glad I could help.
 
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