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Full Discussion: Clear log file in use.
Top Forums UNIX for Advanced & Expert Users Clear log file in use. Post 302122180 by qfwfq on Tuesday 19th of June 2007 01:49:24 PM
Old 06-19-2007
If you mean clear the whole content and remove all lines inside the file then :

Code:
cat /dev/null > your_file

Make sure you know what you are doing because that really clears the content. The touch command just updates the stamped time of the file.
 

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Mason::Filters::Standard(3pm)				User Contributed Perl Documentation			     Mason::Filters::Standard(3pm)

NAME
Mason::Filters::Standard - Standard filters DESCRIPTION
These filters are automatically composed into Mason::Component. FILTERS
Capture ($ref) Uses "$m->capture" to capture the content in $ref instead of outputting it. % $.Capture(my $content) {{ <!-- this will end up in $content --> % }} ... do something with $content CompCall ($path, @args...) Calls the component with path and @args, just as with "$m->scomp", with an additional coderef argument "yield" that can be invoked to generate the content. Arguments passed to "yield" can be accessed inside the content via @_. This is the replacement for Mason 1's Components With Content <http://search.cpan.org/perldoc?HTML::Mason::Devel#Component_Calls_with_Content>. In index.mc: % $.CompCall ('list_items.mi', items => @items) {{ <li><% $_[0] %></li> % }} In list_items.mi: <%class> has 'items'; has 'yield'; </%class> % foreach my $item (@{$.items}) { <% $.yield->($item) %> % } NoBlankLines Remove lines with only whitespace from content. This % $.NoBlankLines {{ hello world % }} yields hello world Repeat ($count) Repeat the content block $count times. Note that the block is re-executed each time, which may result in different content. <!-- Prints 1 to 5 --> % my $i = 1; % $.Repeat(5) {{ <% $i++ %><br> % }} Tee ($ref) Uses "$m->capture" to capture the content in $ref, and also output it. % $.Tee(my $content) {{ <!-- this will end up in $content and also be output --> % }} ... <!-- output content again down here --> <% $content %> Trim Remove whitespace from the beginning and end of the content. SEE ALSO
Mason::Manual::Filters, Mason AUTHOR
Jonathan Swartz <swartz@pobox.com> COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Jonathan Swartz. 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 2012-05-02 Mason::Filters::Standard(3pm)
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