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How to echo message when file is empty.

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# 1  
Old 10-20-2010
How to echo message when file is empty.
If a file is empty then it must print the message "no data found"

eg:

Code:
 if [cat $FILE_NAME = empty ] then
      echo "no data found"

your help is really appreciated.
Last edited by radoulov; 10-20-2010 at 08:42 AM.. Reason: Code tags, please!
# 2  
Old 10-20-2010
There is a test option for this:

Code:
if [ ! -s FILE ]; then
  echo "No data found..."
fi

# 3  
Old 10-20-2010
If you want to test for empty file (without any non printable characters or white spaces):

Code:
[ -s afile ] || echo empty

Otherwise:

Code:
[ -n "$(<afile)" ] || echo empty

# 4  
Old 10-20-2010
Thanks for the help it worked

if [ ! -s FILE ]; then echo "No data found..." fi
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