From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Olivier Dion via General Guile related discussions Newsgroups: gmane.lisp.guile.user Subject: Re: Shell commands with output to string Date: Tue, 22 Feb 2022 09:27:57 -0500 Message-ID: <87o82z5636.fsf@laura> References: Reply-To: Olivier Dion Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26968"; mail-complaints-to="usenet@ciao.gmane.io" To: Zelphir Kaltstahl , Guile User Original-X-From: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Tue Feb 22 15:33:07 2022 Return-path: Envelope-to: guile-user@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 1nMWDz-0006sx-24 for guile-user@m.gmane-mx.org; Tue, 22 Feb 2022 15:33:07 +0100 Original-Received: from localhost ([::1]:39472 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nMWDy-0002UF-2l for guile-user@m.gmane-mx.org; Tue, 22 Feb 2022 09:33:06 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:40886) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nMW9K-0006Xp-Uu for guile-user@gnu.org; Tue, 22 Feb 2022 09:28:19 -0500 Original-Received: from smtp.polymtl.ca ([132.207.4.11]:44113) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nMW9I-0003No-0Y for guile-user@gnu.org; Tue, 22 Feb 2022 09:28:17 -0500 Original-Received: from localhost (modemcable094.169-200-24.mc.videotron.ca [24.200.169.94]) by smtp.polymtl.ca (8.14.7/8.14.7) with ESMTP id 21MERvL2025185 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 22 Feb 2022 09:28:02 -0500 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp.polymtl.ca 21MERvL2025185 In-Reply-To: X-Poly-FromMTA: (modemcable094.169-200-24.mc.videotron.ca [24.200.169.94]) at Tue, 22 Feb 2022 14:27:57 +0000 Received-SPF: pass client-ip=132.207.4.11; envelope-from=olivier.dion@polymtl.ca; helo=smtp.polymtl.ca X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Original-Sender: "guile-user" Xref: news.gmane.io gmane.lisp.guile.user:18121 Archived-At: On Tue, 22 Feb 2022, Zelphir Kaltstahl wrote: > Hello Guile users! > > How would I run a shell command from inside Guile and get its output > as a string, instead of the output being outputted directly? (Guile > 3.0.8) I use the following: (define-module (shell utils) #:use-module (ice-9 format) #:use-module (ice-9 popen) #:use-module (ice-9 textual-ports)) (define (shell% proc fmt . args) (let* ((port (open-input-pipe (format #f "~?" fmt args))) (output (proc port))) (close-pipe port) output)) (define-public (shell . args) (apply shell% (cons get-string-all args))) (define-public (shell$ . args) (apply shell% (cons get-line args))) Then (shell "ls" "-l") The $ variant is to get a single line in the output. -- Olivier Dion Polymtl