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Shell Programming and Scripting

Testing for empty file

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# 1  
Old 11-14-2008
Testing for empty file
Hello,

I need to determine if a file I have is empty or not. How can I go about doing this in shell scripting? Some sample code would be appreciated?

Thanks,
# 2  
Old 11-14-2008
Code:
FILE=/path/to/file
if [[ -s $FILE ]] ; then
         echo "Greater"
else
         echo "Not"
fi

# 3  
Old 11-14-2008
Code:
if [[ -s myfilename ]] ; then
     echo "my file exists and is greater than zero length"
else
     echo "my file does not exist or it is zero length"
fi

# 4  
Old 11-14-2008
What is wrong with this syntax?
Trying to debug it myself but running into a jam. The interpreter does not seem to like this code:

Code:
if [[ -s results1.tmp ]] & [[-s results2.tmp]] 
then 
     /bin/mail -s "Illegal Loggon Attempts on MAIL" sysadmin@swi.com < final_email.tmp
else
    if [[-s results1.tmp]]  
    then    
        /bin/mail -s "Illegal Loggon Attempts on MAIL" sysadmin@swi.com < email.tmp
    fi
else
     if [[-s results2.tmp]]
     then    
         /bin/mail -s "Illegal Loggon Attempts on MAIL" sysadmin@swi.com < email1.tmp
    fi
fi

# 5  
Old 11-14-2008
Im not sure how often you plan on running this, you will get lots of emails if you run it often.

I use logwatch that sends me an email daily with all this, and more info.
# 6  
Old 11-14-2008
Quote:
Originally Posted by Ikon
Im not sure how often you plan on running this, you will get lots of emails if you run it often.

I use logwatch that sends me an email daily with all this, and more info.
I will run it daily so we will not be getting more than one email. Just need to debug that if statement above and I am done.....
# 7  
Old 11-14-2008
What error do you get??

I beleive if should be 2 && like below.
Code:
if [ -s results1.tmp ] && [-s results2.tmp]

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