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Full Discussion: cat arguments to a function
Top Forums Shell Programming and Scripting cat arguments to a function Post 302443740 by Random_Net on Tuesday 10th of August 2010 02:50:51 AM
Old 08-10-2010
Question cat arguments to a function
Hi,

I've a logging function in bourne shell, flog() which logs the first argument passed to it. How can I pass arguments to this function from a file, like

Code:
cat filename | sed '...filtering...' | flog

or
Code:
cat filename | sed '...filtering...' | xargs flog

Which did not work, after which then I tried to use a while loop to feed the lines one by one to the function :

Code:
while read line
do
   flog "$line"
done < `cat filename | sed '...filtering...'  `

However the above method also did not work.

Finally I was able to do it by first creating the filtered file, then parsing it through the loop:

Code:
cat filename | sed '...filtering...'  > filename2 
while read line
do
   flog "$line"
done < filename2

Is there a more elegant way of doing this?
 

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LEARN ABOUT DEBIAN

string::flogger

String::Flogger(3pm)					User Contributed Perl Documentation				      String::Flogger(3pm)

NAME

       String::Flogger - string munging for loggers

VERSION

       version 1.101242

SYNOPSIS

	 use String::Flogger qw(flog);

	 my @inputs = (
	   'simple!',

	   [ 'slightly %s complex', 'more' ],

	   [ 'and inline some data: %s', { look => 'data!' } ],

	   [ 'and we can defer evaluation of %s if we want', sub { 'stuff' } ],

	   sub { 'while avoiding sprintfiness, if needed' },
	 );

	 say flog($_) for @inputs;

       The above will output:

	 simple!

	 slightly more complex

	 and inline some data: {{{ "look": "data!" }}}

	 and we can defer evaluation of stuff if we want

	 while avoiding sprintfiness, if needed

METHODS

   flog
       This method is described in the synopsis.

   format_string
	 $flogger->format_string($fmt, @input);

       This method is used to take the formatted arguments for a format string (when "flog" is passed an arrayref) and turn it into a string.  By
       default, it just uses ""sprintf" in perlfunc".

AUTHOR

       Ricardo SIGNES <rjbs@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2012 by Ricardo SIGNES <rjbs@cpan.org>.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2012-03-26						      String::Flogger(3pm)
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