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PERL readline Function



Syntax

readline EXPR


Definition and Usage

Reads a line from the filehandle referred to by EXPR, returning the result. If you want to use a FILEHANDLE directly, it must be passed as a typeglob.

Simply readline function is equvivalent to <>.

Return Value

  • In a scalar context, only one line is returned

  • In a list context, a list of line) up to end-of-file is returned

Example

Try out following example:

#!/usr/bin/perl -w

my($buffer) = "";
open(FILE, "/etc/services") or
     die("Error reading file, stopped");

$buffer = <FILE>;
print("$buffer");

$buffer = readline( *FILE );
print("$buffer");

close(FILE);

It will produce following results:

# /etc/services:
# $Id: services,v 1.33 2003/03/14 16:41:47 notting Exp $


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