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to check if file is empty or not and return a non zero value

 
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# 1  
Old 11-21-2008
to check if file is empty or not and return a non zero value
Hi All,

I am new to unix worldd .

I need to check a file1 if its empty or not.

If its empty then return a non zero value say 99

could you pls let me know the perl script for this.
# 2  
Old 11-22-2008
The shell does it - normal return values are: zero == true anything else == false

Code:
#one way
if [[ -s filename ]] ; then
      echo "filename exists and is > 0 bytes"
else
      echo "filename does not exist or is zero length"
fi
# another way
if [[ -f filename ]] ; then
      if [[ -s filename ]] ; then
             echo "filename exists and is > zero"
      else
             echo "filename exists and == zero "
      fi
else
      echo "filename does not exist"
fi

# 3  
Old 11-22-2008
Jims answer will work. If you want the exitcode to be 99, just add the instruction "exit 99" where you want it.
 
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