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for do done loop -- my vision blurs

 
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# 1  
Old 06-10-2005
for do done loop -- my vision blurs
Someone check my code and tell me why there's no output?
I've been coding for 10 hours and I can't tell.
I've stripped every command, and broken it down to just an echo.

for FILENAME in `cat ${TMP_PATH}fxsol_ls.txt`
do
echo $FILENAME
done
# 2  
Old 06-10-2005
maybe
Code:
for FILENAME in `cat ${TMP_PATH}/fxsol_ls.txt`
do
echo $FILENAME
done

but really this would be better written as
Code:
while read FILENAME
do
echo $FILENAME
done < ${TMP_PATH}fxsol_ls.txt  ....or maybe ${TMP_PATH}/fxsol_ls.txt

also check that the value of TMP_PATH is correct by echoing it before the loop.
# 3  
Old 06-13-2005
thank You
Thank you, this worked out perfectly.
I was trying to add up the number of lines in all files of one directory and I needed this to start me off.
# 4  
Old 06-13-2005
rules: Question about loops in general
If I create a variable inside of a loop, is it available outside of the loop?

PHP Code:
for ex:
while read FILENAME
do
...
HAMMERS=1
...
done 
What if I created the variable, before the loop?

PHP Code:
HAMMERS=0

while read FILENAME
do
...
HAMMERS=1
...
done 
# 5  
Old 06-13-2005
answer about loops
If a variable is declared inside the loop , it wont be available outside the loop.

But if a variable is defined outside a loop , it can be used in the loop .
# 6  
Old 06-13-2005
ah great
thank you...
very useful to know.
# 7  
Old 06-13-2005
Quote:
Originally Posted by rahul123_libra
But if a variable is defined outside a loop , it can be used in the loop .
And then when you exit the loop, the variable will still hold the value that was set before the loop was entered (sometimes Smilie) see this post to save me typing out the example again...

Cheers
ZB
 
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