shell script!!

[ajay_34]

hi all,
i want to write a shell script thats should check size of the given file name. if the file contains zero bytes, remove that file. so any one plz help me. thanks in advance.
ajay.

[NiCK_76]

find /yourpath -size 0 -exec rm -f {} \;

[ajay_34]

hi nick,
it helped me.thanks for your reply.but i want to use 'if' condition or 'test' command to check the file size and then it should remove the empty files. thanks and regards.
ajay

[NiCK_76]

try following command
find ./ -size 0 -exec rm -i {} \;

[Georg Tresselt]

If you insist on using an if, -s is what comes closest to your demand. [ -s ] checks if a file exists and is larger than 0. So you would have to delete all files that fail that test.

[Deepak_22 · Accepted solution]

#!/bin/sh
File_List=`ls`
for File_Name in $File_List
do
File_Size=`ls -ld $File_Name | awk '{ print $5}'`
if [ $File_Size == 0 ] ; then
echo $File_Name::$File_Size
rm -i $File_Name
fi
done

[Ross Minkov]

From the bash man page (man bash):

Conditional expressions are used by the [[ compound command and the test and [ builtin commands to test file attributes and perform string and arithmetic comparisons.

-s file ==> True if file exists and has a size greater than zero.

Regards,
Ross

[ajay_34]

thanks deepak.this is the script what exactly i was looking for.
thanks to all who given me suggestions.

regards,
ajay

[Stuart Browne]

Georg and Ross actually gave you a better solution.

If using bash, certainly [[/]] with '-s' is the fastest solution, but if you want multi-platform, it's not the best.

The 'test' ([) application has the '-s' option as well, and it is fully multiplatform:

if [ -s /file/name.here ]
then
rm -f /file/name.here
fi

[ajay_34]

hi browne,

i tryed your script but it dint work browne .y i dont know.it cant delete the empty file. anyway thanks.

ajay

[Ross Minkov]

Ajay,

Try this code below. I think Stewart missed one "!".

==============================
#!/bin/bash
if [ ! -s emptyfile ]
then
echo "deleting emptyfile"
rm -f emptyfile
fi
===============================

Again from the bash man page (man bash):

Conditional expressions are used by the [[ compound command and the test and [ builtin commands to test file attributes and perform string and arithmetic comparisons.

-s file ==> True if file exists and has a size greater than zero.


HTH,
Ross

[Stuart Browne]

yup, I screwed up, my apologies.

[ajay_34]

hi Ross Minkov and Stuart Browne,
thanks for your support. your suggestions helped me.slowly i am learning shell scripting.your suggestions helped me to think in different way.

thanks once again

regards,
ajay