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or depending on exact context, this will work instead (I've yet to deliberately determine whether the above method or the below method is any better in any particular context):
Code:
while read line; do
echo "$line"
done < file
Sasha
EDIT: And yes, you can do any of the aforementioned codes from blacky or myself, on the commandline.
Last edited by GrapefruiTgirl; 03-25-2010 at 10:23 PM.
There are times when you need to use the second approach. If "cat file" produces space separated values for each line/record of the file (e.g. several words in a sentence), then the first "for/do/done" approach that I suggested will receive each "word" as a unique value of $a. If you want each "line" of the file to be processed in entirety, then my suggestion is not the answer for you and you should use the while/read approach.
or depending on exact context, this will work instead (I've yet to deliberately determine whether the above method or the below method is any better in any particular context):
Code:
while read line; do
echo "$line"
done < file
Hello Sasha
The great advantage of the second method is that any variables set in the loop will still be set when the loop finishes. Full explanation here.
Catkin -- thank you very much for that! Exactly what I had been wondering, and precisely the issue I have experienced on occasion: variables acting weirdly "local" to the loop (I think we chatted about this elsewhere at one point?)
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