Shell Programming and Scripting

Hi All,

I need to check a file whether it exists and also whether it is empty or not. I have a code for this but it is not working as per my requirement. Can anyone pls suggest me on this.

Code:

function funcFLSanityCheck
{
	
	if [ ! -s $varFLSentFileListPath/$varFLSentFileName ]
	then
		echo "${varFLSentFileListPath}/${varFLSentFileName} either not available or is a empty file"	
		exit 20
	fi
	
}

Note: I have written the script in sh (/bin/sh)

Thanks in Advance n Happie New Year to All..

What exactly is not working?

If I run the commands separately all the commands are giving me the correct ouput.. But if I run it inside the script it is showing as " / either not available or is a empty file " as output.. But I am having a file in the path and also the file is not empty..

Are you sure those variables are set?

Yes both the variables are set

Using set -x just after the shebang (#!/bin/sh) will show output for every line executed. That might help you to debug.

I agree with RudiC and Aia; it looks very much like the variables being used in your function are not defined in the environment in which the function is being run.

What operating system are you using? /bin/sh on some systems is a true Bourne shell (that handles function definitions differently) than bash, ksh, and zsh that are installed as /bin/sh on some other systems.

And, how are you invoking your function?

We look forward to seeing the output you get when you run your script with tracing enabled as Aia suggested.