From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: How to rename files to numbers in Eshell? Date: Sat, 11 Sep 2021 16:40:28 +0300 Message-ID: References: <87tuirckxp.fsf@inka.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39678"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0.7+183 (3d24855) (2021-05-28) Cc: help-gnu-emacs@gnu.org To: "Felix E. Klee" Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat Sep 11 15:45:33 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mP3K0-000A68-Q6 for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 11 Sep 2021 15:45:32 +0200 Original-Received: from localhost ([::1]:56550 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mP3Jz-0007Kq-Bq for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 11 Sep 2021 09:45:31 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60776) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mP3JI-0007Ke-Tg for help-gnu-emacs@gnu.org; Sat, 11 Sep 2021 09:44:49 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:33365) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mP3JG-0003KJ-Tx for help-gnu-emacs@gnu.org; Sat, 11 Sep 2021 09:44:48 -0400 Original-Received: from localhost ([::ffff:197.157.0.44]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 0000000000027ED0.00000000613CB2AC.0000455F; Sat, 11 Sep 2021 06:44:12 -0700 Mail-Followup-To: "Felix E. Klee" , help-gnu-emacs@gnu.org Content-Disposition: inline In-Reply-To: <87tuirckxp.fsf@inka.de> Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:132997 Archived-At: * Felix E. Klee [2021-09-11 16:16]: > Consider a list of files: > > $ ls -1 *.jpg > IMG_20210909_0003.jpg > IMG_20210909_0004.jpg > IMG_20210909_0005.jpg > IMG_20210909_0006.jpg > IMG_20210909_0007.jpg > … > > I want to rename these files to `1.jpg`, `2.jpg`, …, and I know how to > do it with Dired. However, this time I want to do it with Eshell. > > My own attempt, works, but I think there should be an easier way: > > $ listify *.jpg > $ setq my-files $$ > $ setq my-numbers $(number-sequence 1 (length my-files)) > $ setq my-pairs $(mapcar* 'cons my-files my-numbers) > $ for pair in $my-pairs { setq a (car pair); setq b (cdr pair); > mv $a "$b".jpg } This may serve as starting point: (defun renumber-files (&optional files) "This function works within Dired or Directory Editor in GNU Emacs. It will rename bunch of files and renumber them automatically by date and number of the file. It is useful when you are renaming less important images or bunch of files with irrelevant file names." (interactive) (let* ((files (or files (dired-get-marked-files))) (count 1)) (dolist (file files) (let* ((extension (file-name-extension file)) (filename (format "%s-%06.f.%s" (format-time-string "%F") count extension))) (rename-file file filename) (setq count (+ count 1)))))) Then in eshell: $ renumber-files * I have chosen to renumber it by date, you can customize it yourself. It is handy when I am downloading many pictures or videos, then I know at what date they were downloaded. Of course in that case I don't mind of file names significance, that is why I am renumbering them. -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/