01-27-2015
You are most welcome. Glad to hear the updated program is making your life easier.
I'll try and explain that code segment.
Firstly F has now special meaning and I picked the variable F to represent "Found". It's quite common here to use short variable names but for you own benefit later down the track I'd suggest using LinesFound or something like that.
F++ Has it's roots in the C programming language it increments the variable and could be also written as F=F+1 in basic and many other languages. Note if F is uninitialized (as in on the first matching line) it will be set to 1 by this command.
END{ if(F) print FILENAME":"F} The END condition is a special awk condition and only applies once after the all files have been processed. In this block we are testing our F variable and if it is non-zero we print the input file name followed by a colon character ":" and the F variable's value. This is to avoid printing "filename:" when no lines are found.
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PRINT(3) 1 PRINT(3)
print - Output a string
SYNOPSIS
int print (string $arg)
DESCRIPTION
Outputs $arg.
print is not actually a real function (it is a language construct) so you are not required to use parentheses with its argument list.
PARAMETERS
o $arg
- The input data.
RETURN VALUES
Returns 1, always.
EXAMPLES
Example #1
print examples
<?php
print("Hello World");
print "print() also works without parentheses.";
print "This spans
multiple lines. The newlines will be
output as well";
print "This spans
multiple lines. The newlines will be
output as well.";
print "escaping characters is done "Like this".";
// You can use variables inside a print statement
$foo = "foobar";
$bar = "barbaz";
print "foo is $foo"; // foo is foobar
// You can also use arrays
$bar = array("value" => "foo");
print "this is {$bar['value']} !"; // this is foo !
// Using single quotes will print the variable name, not the value
print 'foo is $foo'; // foo is $foo
// If you are not using any other characters, you can just print variables
print $foo; // foobar
print <<<END
This uses the "here document" syntax to output
multiple lines with $variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon no extra whitespace!
END;
?>
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
SEE ALSO
echo(3), printf(3), flush(3), Heredoc syntax.
PHP Documentation Group PRINT(3)