One liners, quick rant... Post: 302977435

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The Lounge What is on Your Mind? One liners, quick rant... Post 302977435 by rbatte1 on Monday 18th of July 2016 06:45:03 AM

07-18-2016

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I've learned the hard way that compressing my code to the extreme just confuses myself when I need to change it. Do I really want 2 hours of extricating myself for a few extra lines of clear code that cost no noticeable time.

There is a case for a one-liner if you can get a tool such as awk to do several things at once rather than calling a loop with multiple greps or cuts being called within it. For me it comes down to using it for processing efficiency. Even if I can make my code fit into fewer blocks on disk, it's just not worth it. If I do, then it gets an explicit comment, often with example code it is logically replacing. If I can adjust it in future in a longer method, then conversion would be simpler if I get my requirements clearer first.

It's the same with debugging logs for batch programs - write lots of info to the log so that when there is a problem, the trace is there. Just make sure you clean up old logs after a short time to avoid running out of space. It's far better than trying to trace or reproduce an error, potentially altering your data for the worse on each attempt or having to put trace information in when an error occurs and you are bleary-eyed.

Robin

rbatte1

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trace-cmd-options

TRACE-CMD-OPTIONS(1)													      TRACE-CMD-OPTIONS(1)

NAME

       trace-cmd-options - list available options from trace-cmd plugins

SYNOPSIS

       trace-cmd options

DESCRIPTION

       The trace-cmd(1) options command will examine all the trace-cmd plugins that are used by trace-cmd report(1) and list them.

SEE ALSO

       trace-cmd(1), trace-cmd-record(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
       trace-cmd-list(1), trace-cmd-listen(1)

AUTHOR

       Written by Steven Rostedt, <rostedt@goodmis.org[1]>

RESOURCES

       git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

COPYING

       Copyright (C) 2011 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).

NOTES

	1. rostedt@goodmis.org
	   mailto:rostedt@goodmis.org

								    06/11/2014						      TRACE-CMD-OPTIONS(1)