The variable $EachLine2 is not quoted. If it contains a space character or nothing it effectively disappears.
Where $DATA_DIR/cells*.dat expands to more than one filename the grep is still syntactically correct even if $EachLine2 is blank or spaces in which case the first filename gets treated as a regular expression by grep !
To see what $DATA_DIR/cells*.dat expands to, try a plain echo on the variable.
My apologies haaru, when I gave you the grep line to quote I meant it to be on the code you posted originally.
I understand that other people helping you has probably led you down other routes now - but I'm positive if you quote the grep line as I showed you, on the code you originally posted, it will work.
My apologies haaru, when I gave you the grep line to quote I meant it to be on the code you posted originally.
I understand that other people helping you has probably led you down other routes now - but I'm positive if you quote the grep line as I showed you, on the code you originally posted, it will work.
No worries steviefordi!
I think that this is getting somewhere now..
Code:
while read -r EachLine2
do
RESULT="$(grep "$EachLine2" "$DATA_DIR"/cells*.dat | cut -d, -f2)"
echo $? >> check.txt
#If value is empty set to unknown
if [ -z "$RESULT" ]; then
echo "$EachLine2""\t"="\t"Unknown >> lcells_names_$1.txt
#Else echo normally
else
echo "$EachLine2""\t"="\t""$RESULT" >> lcells_names_$1.txt
fi
done < lcells_$1.txt
For the first 3 values fed we get correct results in the correct pattern
<<Input>> = <<Output>>
When the first empty row of data arrives, we get incorrect data for that result but we still get the correct output pattern.
For every result after that we get Incorrect data tottaly ignoring the pattern posting only the result.
The output of the program consisted only of exit status 0.
The loop successfuly iterated 103 times, did a wc -l on check.txt file that has the exit status, ( ) but I am led to believe that after the first empty row it was either:
Fed the whole list of input numbers for each iteration.
Grepped everything from the resultset since the input string was "".
I favor No.2
I think that I will get to the bottom of this, thanks to your help, by just changing the grep command format!
---------- Post updated at 05:50 PM ---------- Previous update was at 05:02 PM ----------
Quote:
Originally Posted by steviefordi
Ok another thing to try -
What is the exit status of the grep line when EachLine2 contains the empty string. I think that it is failing and causing your loop to exit.
Personally I would add three sets of quotes to the line as such:
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05-17-2010
) but I am led to believe that after the first empty row it was either: