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envelope-from=luhux@outlook.com; helo=APC01-SG2-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/10 03:44:52 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.23 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:17014 Archived-At: Hello everyone I am a newbie to guile and I am learning to use guile to write scripts I want to implement this shell command: wg pubkey < private > public This is a command to generate a key, It inputs private key and EOF from stdin, then it outputs the public key and exits. I implemented it using the following code in guile: (use-modules (ice-9 popen) (ice-9 rdelim)) (define (wg-gen-private-key) (let* ((port (open-input-pipe "wg genkey")) (result (read-line port))) (close-pipe port) result)) (define (wg-gen-public-key private-key) (let ((port (open-input-output-pipe "wg pubkey"))) (display private-key port) (let ((result (read-line port))) (close-port port) result))) Then I executed the code to get the public key scheme@(guile-user)> (wg-gen-public-key (wg-gen-private-key)) but the code got stuck in this place: (let ((result (read-line port))) How should I do? There are too few Guile information on the Internet. Sorry for asking such a basic question. luhux