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how to protect white space in for loop

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# 1  
Old 07-01-2008
Question how to protect white space in for loop
Hi All,

I know there's a really simple answer to this but I just can't think of it Smilie

I'm processing a file which has lines containing white space i.e.

Quote:
this is the first line
this is the second line
this is the third line
And I want to perform some awk on each line but when I do the following:

Code:
for US in $( cat /tmp/unique-strings.tmp | sed 's/\[/\\[/g' | sed 's/\]/\\]/g' | sed 's/\//\\\//g' )
do

echo ""
echo "$US"
echo ""

done

Each line gets broken down into it's component parts like this:

Quote:
this

is

the

first

line
How can I get it to echo each complete line? (In my code I obviously want to do more than just echo the line...)

Thanks,

p.
# 2  
Old 07-01-2008
Sorry I don't get it. Please just show the input file and how the output should look like. If you work each element with for from a list, every element will be echoed line by line, that's as it is. In the example you use sed, not awk Smilie
# 3  
Old 07-01-2008
Something like this?

Code:
awk '{for(i=1;i<=NF;i++){printf("%s\n\n", $i)}}' file

Regards
# 4  
Old 07-01-2008
Sorry, I'm not explaining myself clearly.

I would like the entire sentence to be treated as one string but it's getting split into component parts (each word).

Is there a way I can stop this split occuring?
# 5  
Old 07-01-2008
Don't beat me, but you could just "cat" the file and everything will be fine hehe Smilie
But I guess you will do something with every sentence... I would prefer this
Code:
cat infile |\
while read LINE; do
    echo "This is my line:" ${LINE}
    #now do something with it in here
done

If you are going to parse the contents of the line, better use awk or sed like Franklin52 did.
# 6  
Old 07-01-2008
Code:
while read record
do
echo "$record" | sed 's/\[/\\[/g' | sed 's/\]/\\]/g' | sed 's/\//\\\//g'| read US
echo ""
echo "$US"
echo ""

done < /tmp/unique-strings.tmp

# 7  
Old 07-01-2008
Quote:
Originally Posted by zaxxon
Don't beat me, but you could just "cat" the file and everything will be fine hehe Smilie
But I guess you will do something with every sentence... I would prefer this
Code:
cat infile |\
while read LINE; do
    echo "This is my line:" ${LINE}
    #now do something with it in here
done

If you are going to parse the contents of the line, better use awk or sed like Franklin52 did.
Brilliant that's what I needed thanks Smilie

Believe it or not it's the first time I've used a while statement in one of my scripts! Smilie
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