UNIX for Dummies Questions & Answers

Hi ,


I have some 10 files where i need to check the size of each and every file...if the size of the file is 0...I shud send out an email mentioning which file is actually of 0KB size..


Pls help

Code:

# Save a list of empty files.
for FILE in *
do
        [ -s "$FILE" ] || echo "$FILE is 0KB"
done > /tmp/$$

# If the list isn't empty, mail it.
[ -s /tmp/$$ ] && sendmail username@host < /tmp/$$
rm -f /tmp/$$

I'm not sure I have the sendmail part right, I don't use it much at all.

# Save a list of empty files???

Do i need to mention all the files...say

file1.txt
file2.txt
for file in *do
[ -s "$FILE" ] || echo "$FILE is 0KB"
done > /tmp/$$

Yes. I assumed you wanted to send several notices in one mail, instead of one notice in many mails.

So I loop through every file:

Code:

for FILE in *
do
...
done

...print the files that are empty...

Code:

[ -s "$FILE" ] || echo "$FILE is empty"

...and save the output of that entire loop into a file.

Code:

done > /tmp/$$

If that list isn't empty, it needs to be mailed to somebody.

Code:

[ -s /tmp/$$ ] && sendmail username@host </tmp/$$

No, it already works.

If you wanted to be more specific, you could do *.txt instead of just *.

If you wanted to mention them all by name, you could do

for FILE in file1.txt file2.txt file3.txt file4.txt instead.

You can't put do on the same line. My spacing and linebreaks are mostly necessary.

Sometiems people like to cram it all in like for X in * ; do something ; done but that's tough to read later.

i have the file names with me which are static...
So i would be checking file sizes for those files and if any of the file is 0kb

I want an email to be sent...

am testing ur approach...Thanks for the quick response

---------- Post updated at 02:51 PM ---------- Previous update was at 02:40 PM ----------

TESTED UNTIL HERE

for FILE in *
do
[ -s "$FILE" ] || echo "$FILE is 0KB"
done > /tmp/$$

How abt the email.....and how do i get to see the file which r directed to /tmp/$$

Well, did you try the code I suggested for that? Did it or did it not work? If it didn't work, in what way did it not work?

cat /tmp/$$

for FILE in file1.txt file2.txt
do
[ -s "$FILE" ] || echo "$FILE is 0KB"
done > /tmp/$$

Since am only interested in few files..I have actually enlisted them...

But now how do i send an email with those files which are 0kb..I mean the files which are in /tmp/&&


your code worked fine.....1st part is over....email part is pending...