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Full Discussion: Concatenate Numerous Files
Operating Systems Linux Fedora Concatenate Numerous Files Post 302722841 by sudon't on Sunday 28th of October 2012 07:28:22 PM
Old 10-28-2012
Use regex to change filenames
OK, I numbered the directories by hand so that they would sort in the canonical order. Now, they had the files within the directories numbered using single digit enumeration, so naturally they don't sort correctly:
Code:
./01_Old Testament/01_Genesis/Genesis1.txt
./01_Old Testament/01_Genesis/Genesis10.txt
./01_Old Testament/01_Genesis/Genesis11.txt

So I worked out a regex to place a zero in front of single digit filenames:
Code:
perl -pi -e 's/(?<=[a-z])(?=[0-9]\.txt)/0/g' ./OTfilelist.txt

I won't say how long, or how many tries it took for me to figure this out, even though I'm sure it would make for an exciting story. But, even though I am filled with a feeling of accomplishment, the filenames still do not sort correctly.
Code:
./01_Old Testament/01_Genesis/Genesis01.txt
./01_Old Testament/01_Genesis/Genesis10.txt
./01_Old Testament/01_Genesis/Genesis11.txt

No matter, because I want things to behave in the real world, too.
So, now that I have the magic regex in hand, how can I use it to change the actual filenames?
What I've been able to glean from the web is that there is a system call called "rename" which somehow should work with perl. But there is no mention of "rename" in the perl man page. On the other hand, there is a man page for rename, but it doesn't contain anything that I found illuminating. I'm guessing this is something that has to be called from a script?
I've also seen examples on the web of rename as a(n apparent) standalone executable, but I don't seem to have it. Nor can I find it though ports or fink.
Code:
-bash $ rename
-bash: rename: command not found

I guess I should mention I'm using Mac OS 10.6.8, Perl 5.12.4
Is there a different way to invoke this rename? Am I barking up the wrong tree altogether? Surely there's a one-liner solution to recursively rename files with a regex?
 

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LEARN ABOUT DEBIAN

flare

FLARE(6)							 flare User Manual							  FLARE(6)

NAME

       flare - diablo like rpg game

DESCRIPTION

       This manual page documents briefly the game flare and the files it uses.

       flare is a diablo like rpg game.

FILES

       settings.txt
	   flare does not have a settings dialogue yet. You can manipulate flare's settings in the settings.txt instead. It is located in one of
	   the following paths: $XDG_CONFIG_HOME/flare $HOME/.config/flare ./config

       keybindings.txt
	   You can manipulate flare's default key bindings in this file. It is located in one of the following paths: $XDG_CONFIG_HOME/flare
	   $HOME/.config/flare ./config

       save[0-9]{?}.txt
	   Savegames are simple txt files in flare. You can find them at one of these places: $XDG_DATA_HOME/flare $HOME/.local/share/flare
	   ./saves If permissions are correct, the game is automatically saved when you exit.

ENVIONMENT

       XDG_CONFIG_HOME, $XDG_DATA_HOME
	   flare follows the XDG stanard, see FILES section above.

BUGS

       If you should find a bug in flare, please report it at the official BTS at: https://github.com/clintbellanger/flare/issues.

AUTHOR

       Jan-Hendrik Peters <hennr@hennr.name>
	   Wrote this manpage for the Debian system.

COPYRIGHT

       Copyright (C) 2011 Jan-Hendrik Peters

       This manual page was written for the Debian system (and may be used by others).

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3 or (at
       your option) any later version published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

flare								    12/26/2011								  FLARE(6)
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