From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: Function to find symlink target Date: Sun, 05 Jun 2022 07:40:30 +0200 Message-ID: <87o7z78y7l.fsf@dataswamp.org> References: <87czg35n3g.fsf@web.de> <871qwif973.fsf@web.de> <87fskv9gm8.fsf@dataswamp.org> <87pmjxoev5.fsf@dataswamp.org> <87k0a199t2.fsf@dataswamp.org> <87v8tjnbin.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29404"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:A2wBdl1ygItWG1PSZsqnAnChggg= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jun 05 07:45:21 2022 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 1nxj4i-0007VK-Hj for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 05 Jun 2022 07:45:20 +0200 Original-Received: from localhost ([::1]:50262 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nxj4g-0003aC-VS for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 05 Jun 2022 01:45:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58618) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nxj0O-0003ZG-E5 for help-gnu-emacs@gnu.org; Sun, 05 Jun 2022 01:40:58 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:43840) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nxj0I-0004jH-8K for help-gnu-emacs@gnu.org; Sun, 05 Jun 2022 01:40:48 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1nxj0C-00024I-3T for help-gnu-emacs@gnu.org; Sun, 05 Jun 2022 07:40:40 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 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:137498 Archived-At: Jean Louis wrote: > Main use for symlinks on a GNU system is in libraries' > directories: > > lrwxrwxrwx 1 11 May 16 2020 aspell -> aspell-0.60 This is so you can just refer to - here - aspell and it will lead you to a specific version, or just the version that is currently installed. > lrwxrwxrwx 1 22 Mar 25 2021 libauthcustom.so -> libauthcustom.so.0.0.0 > lrwxrwxrwx 1 22 Mar 25 2021 libauthcustom.so.0 -> libauthcustom.so.0.0.0 It has to do with versions as well: The symbol versioning is a GNU extension to library versioning [that] allows a single externally-versioned library (e.g. libc.so.6) to provide multiple incompatible implementations of the same symbol (before symbol versioning, you had to update the external version of the library every time you introduced incompatible interface; but with symbol versioning you don't). [1] > Here are more practical example on finding files easier in > file system by using symlinks for tagging I have tagging with my e-mail, you can send a mail to incal+even@dataswamp.org even ... Not sure what tagging you refer to tho? Maybe symbolic (or soft) links are pretty useless, is the disappointing truth? [1] https://stackoverflow.com/a/20443988 -- underground experts united https://dataswamp.org/~incal