To check whether the file is empty or not in shell script (sh) Post: 302963501

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Hi, May I know how to check for empty file in Perl. Iam missing something, somewhere. #!/usr/bin/perl my $open_dir = '/path/'; my $file; my $ma = "abc_.*.\.psv\$" opendir(VAR, $open_dir) or die "Can't open $oepn_dir: $!\n"; while( defined ($file = readdir VAR) ) #read all...

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How to check if a file is empty?

Hi Masters..... I have problem !!! I need to check number of records in a file and if it is zero or file is empty i need to do some task. if ; then echo "File s empty" else echo "Not empty" fi so how to check this condition. I used wc -l < filename.txt => 1 for zero records same result...

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

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check if file is empty

How do I check if a file is empty in a sh script I want to test in my shell script if the output file is empty and if it is do one thing and if it isnt empty do another? any ideas?

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I am running a C shell script. I have an output file from a previous step and I need to run "something" in the next step to check if the file is empty. If the file is empty, then the job script should finish EOJ. If the file is not empty then the job script should abend. Please help Thanks.

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Hello, I want to make a script which says if a text file is empty or not. I tried two ways of making it, but I have problems with both of them. Now I think that the better way is the ls -s solution (considering that an empty text file has a 0 weight, because "cat file.txt" fails when file is...

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Hi gurus , I have two files and i want to perform different action based on the condition if both or either is empty If then Do something elif then do something elif then do something else do something fi I have tried the below bt its not...

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Javascript to check field is empty then execute rest of script

I have found this bit of code that nearly does what I want. Basically 3 input fields, I want to copy t2 to t3 as it's typed but only if t1 contains data AND t3 is empty: <input type="text" id="t1" /> <input type="text" id="t2" /> <input type="text" id="t3" /> <script> var t2 =...

LEARN ABOUT PHP

superglobals

SUPERGLOBALS(3) 							 1							   SUPERGLOBALS(3)

Superglobals - Superglobals are built-in variables that are always available in all scopes

	Several predefined variables in PHP are "superglobals", which means they are available in all scopes throughout a script. There is no need
       to do global $variable; to access them within functions or methods.

	These superglobal variables are:

	      o$GLOBALS

	      o$_SERVER

	      o$_GET

	      o$_POST

	      o$_FILES

	      o$_COOKIE

	      o$_SESSION

	      o$_REQUEST

	      o$_ENV

       +--------+---------------------------------------+
       |Version |					|
       |	|					|
       |	|	       Description		|
       |	|					|
       +--------+---------------------------------------+
       | 4.1.0	|					|
       |	|					|
       |	|  Superglobals were introduced to PHP. |
       |	|					|
       +--------+---------------------------------------+
       Note

	      Variable availability

	       By default, all of the superglobals are available but there are directives that affect this availability. For further  information,
	      refer to the documentation for variables_order.

       Note

	      Dealing with register_globals

	       If the deprecated register_globals directive is set to on then the variables within will also be made available in the global scope
	      of the script. For example, $_POST['foo'] would also exist as $foo.

	       For related information, see the FAQ titled "How does register_globals affect me?"

       Note

	      Variable variables

	       Superglobals cannot be used as variable variables inside functions or class methods.

       variable scope, The variables_order directive, The filter extension.

PHP Documentation Group 													   SUPERGLOBALS(3)

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