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Full Discussion: Perl- Finding average "frequency" of occurrence of duplicate lines
Top Forums Shell Programming and Scripting Perl- Finding average "frequency" of occurrence of duplicate lines Post 302545611 by acsg on Tuesday 9th of August 2011 02:17:10 AM
Old 08-09-2011
Quote:
Originally Posted by yazu
I believe it is possible. But I'm not sure I understand the task (sorry, English is not my native language). Please give examples of your input and the desired output. Maybe it would be enough if you give the desired output for my INPUTFILE:
All lines: 9
Lines between a: 1, 2, 0 (or maybe you need to remember line numbers - 1, 3, 6, 7?) so what output?
b: 2 - ?
c: ? (only one occurrence) - ?
d: 0 - ?


Thanks for your reply.
Yeah what I want is something like what you said. So, for your example input file, the output would be:

Code:
a- 4 2 
b- 2 3
c- 1 0
d- 2 1



the first field being the contents of the line being repeated, the second field the number of times found in the file, the third field being the average of "every how many lines it is repeated". So for example for 'a', first it appears after 2 lines, then 3 lines then 1 line. So the average of this makes 2 lines. Then for 'b' and 'd' since they are only duplicated once, there won't be a need to make an average. And, since 'c' is never repeated, then the average is just '0' (or could be blank, it doesn't matter).

On the other hand, how about keeping track of the timestamp and subtracting it to make the "time between repetitions" and then making an average? That was my original idea but I don't know how to keep track of this time, per each repeated line. The output in this case would be something like:

Code:
a- 4 0.05
b- 2 0.89
c- 1 0
d- 2 0.06



the last field being the seconds.

Thanks!
 

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LEARN ABOUT DEBIAN

vconsole.conf

VCONSOLE.CONF(5)						   vconsole.conf						  VCONSOLE.CONF(5)

NAME

       vconsole.conf - configuration file for the virtual console

SYNOPSIS

       /etc/vconsole.conf

DESCRIPTION

       The /etc/vconsole.conf file configures the virtual console, i.e. keyboard mapping and console font.

       The basic file format of the vconsole.conf is a newline-separated list environment-like shell-compatible variable assignments. It is
       possible to source the configuration from shell scripts, however, beyond mere variable assignments no shell features are supported,
       allowing applications to read the file without implementing a shell compatible execution engine.

       Note that the kernel command line options vconsole.keymap=, vconsole.keymap.toggle=, vconsole.font=, vconsole.font.map=,
       vconsole.font.unimap= may be used to override the console settings at boot.

       Depending on the operating system other configuration files might be checked for configuration of the virtual console as well, however only
       as fallback.

OPTIONS

       The following options are understood:

       KEYMAP=, KEYMAP_TOGGLE=
	   Configures the key mapping table of for they keyboard.  KEYMAP= defaults to us if not set. The KEYMAP_TOGGLE= can be used to configured
	   a second toggle keymap and is by default unset.

       FONT=, FONT_MAP=, FONT_UNIMAP=
	   Configures the console font, the console map and the unicode font map.  FONT= defaults to latarcyrheb-sun16.

EXAMPLE

       Example 1. German keyboard and console

       /etc/vconsole.conf:

	   KEYMAP=de-latin1
	   FONT=latarcyrheb-sun16

SEE ALSO

       systemd(1), loadkeys(1), setfont(8), locale.conf(5)

AUTHOR

       Lennart Poettering <lennart@poettering.net>
	   Developer

systemd 							    10/07/2013							  VCONSOLE.CONF(5)
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