UNIX for Dummies Questions & Answers

Has anyone got a few tips on how I can test if the file size is 0?

I am moving files on a regular basis from one location to another with ftp. The files which are 0 bytes in size we want to discard.

Thankyou in advance.

ls -s|awk '{print $1}' works to grab the file size in Solaris - you would then need to create the logic to get the file name associated with it. (ls -s filename|awk '{print $1}')

Check the man page for ls and the -s option for your OS (you didn't post it)

Check the man page for "test". On many systems, you can simply do:

if [ -s $filename ]; then
cp $filename /export/home/blap/$filename
fi

Of course you'll change that to your needs, but that's the gist of it. Man pages are our friends :P

You chould also check that the file size is the same after doing the ftp by sending one last file (if it fits into your scheme) with the file sizes and names. Then you can be sure that the file sent was complete (yes, I have seen it where the ftp showed sucessful and the file sizes were different) This is especially helpful when the whole process is automated and just sends email when something failed.