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        <title>Aldolat.it &#8212; Post con tag QRcode</title>
        <link>https://www.aldolat.it/tags/qrcode/</link>
        <description>Ultimi post pubblicati nel tag QRcode &#8212; aldolat.it</description>
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        <managingEditor>aldolat@gmail.com (Aldo Latino)</managingEditor>
        <webMaster>aldolat@gmail.com (Aldo Latino)</webMaster>
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        <lastBuildDate>Tue, 25 Mar 2025 10:21:39 +0100</lastBuildDate>
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            <title>Creare QR code in Linux</title>
            <link>https://www.aldolat.it/posts/2021/creare-qr-code-in-linux/</link>
            <pubDate>Sat, 27 Nov 2021 09:00:00 +0000</pubDate>
            <author>aldolat@gmail.com (Aldo Latino)</author>
            <guid>https://www.aldolat.it/posts/2021/creare-qr-code-in-linux/</guid>
            <description>In Linux abbiamo già disponibili tutti gli strumenti per creare codici QR (o QR code in inglese), senza bisogno di ricorrere a siti di terze parti. Peraltro gli strumenti che abbiamo disponibili ci consentono massimo controllo sul file di uscita e ci permettono anche di ottenere file puramente vettoriali, come SVG ed EPS.&#xA;Innanzitutto installiamo il pacchetto necessario:&#xA;sudo apt install qrencode L’help in linea di qrencode è accessibile col solito comando:&#xA;qrencode --help oppure il manuale completo con:</description>
            <content:encoded>&lt;p&gt;In Linux abbiamo già disponibili tutti gli strumenti per creare codici &lt;span class=&#34;allsc&#34;&gt;QR&lt;/span&gt; (o &lt;em&gt;&lt;span class=&#34;allsc&#34;&gt;QR&lt;/span&gt; code&lt;/em&gt; in inglese),&#xA;senza bisogno di ricorrere a siti di terze parti. Peraltro gli strumenti che&#xA;abbiamo disponibili ci consentono massimo controllo sul file di uscita e ci&#xA;permettono anche di ottenere file puramente vettoriali, come &lt;span class=&#34;allsc&#34;&gt;SVG&lt;/span&gt; ed &lt;span class=&#34;allsc&#34;&gt;EPS&lt;/span&gt;.&lt;/p&gt;&#xA;&lt;p&gt;Innanzitutto installiamo il pacchetto necessario:&lt;/p&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;sudo apt install qrencode&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;L’help in linea di &lt;code&gt;qrencode&lt;/code&gt; è accessibile col solito comando:&lt;/p&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;qrencode --help&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;oppure il manuale completo con:&lt;/p&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;man qrencode&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;e contiene tutte le informazioni necessarie per il suo uso. In &lt;em&gt;&lt;a href=&#34;#tabella-1&#34;&gt;Tabella 1&lt;/a&gt;&lt;/em&gt; elenco quelle&#xA;che dovrebbero essere di uso più comune.&lt;/p&gt;&#xA;&lt;table id=&#34;tabella-1&#34;&gt;&#xA;&#x9;&lt;thead&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;th style=&#34;text-align: left&#34;&gt;Opzione&lt;/th&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;th style=&#34;text-align: left&#34;&gt;Descrizione&lt;/th&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;th style=&#34;text-align: center&#34;&gt;Valore predefinito&lt;/th&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&lt;/thead&gt;&#xA;&#x9;&lt;tbody&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;&lt;code&gt;-t&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;Tipo di codice &lt;span class=&#34;allsc&#34;&gt;QR: PNG, PNG32, EPS, SVG, XPM, ANSI, ANSI256, ASCII, ASCII&lt;/span&gt;i, &lt;span class=&#34;allsc&#34;&gt;UTF8, ANSIUTF8&lt;/span&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: center&#34;&gt;&lt;code&gt;png&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;&lt;code&gt;-s&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;Dimensione dei punti in pixel.&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: center&#34;&gt;&lt;code&gt;3&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;&lt;code&gt;-d&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;Densità in pixel del file generato.&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: center&#34;&gt;&lt;code&gt;72&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;&lt;code&gt;-m&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;Imposta lo spessore dei margini.&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: center&#34;&gt;&lt;code&gt;4&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;&lt;code&gt;-r&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;Legge il testo da codificare da un file esistente&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: center&#34;&gt;&amp;ndash;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&#x9;&#x9;&lt;tr&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;&lt;code&gt;-o&lt;/code&gt;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: left&#34;&gt;File di uscita&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&#x9;&#x9;&lt;td style=&#34;text-align: center&#34;&gt;&amp;ndash;&lt;/td&gt;&#xA;&#x9;&#x9;&#x9;&lt;/tr&gt;&#xA;&#x9;&lt;/tbody&gt;&#xA;&lt;/table&gt;&#xA;&lt;p class=&#34;table-caption&#34;&gt;&lt;span class=&#34;sc&#34;&gt;Tabella 1&lt;/span&gt;: Opzioni di uso comune per &lt;code&gt;qrencode&lt;/code&gt;.&lt;/p&gt;&#xA;&lt;h2 id=&#34;alcuni-esempi&#34;&gt;Alcuni esempi&lt;/h2&gt;&#xA;&lt;h3 id=&#34;creare-un-codice-semplice&#34;&gt;Creare un codice semplice&lt;/h3&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;qrencode -o test.png https://www.aldolat.it&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id=&#34;creare-un-codice-con-pixel-più-grandi&#34;&gt;Creare un codice con pixel più grandi&lt;/h3&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;qrencode -o test.png -s &lt;span class=&#34;m&#34;&gt;10&lt;/span&gt; https://www.aldolat.it&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id=&#34;creare-un-codice-con-pixel-più-grandi-e-a-300-dpi&#34;&gt;Creare un codice con pixel più grandi e a 300 dpi&lt;/h3&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;qrencode -o test.png -s &lt;span class=&#34;m&#34;&gt;10&lt;/span&gt; -d &lt;span class=&#34;m&#34;&gt;300&lt;/span&gt; https://www.aldolat.it&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id=&#34;creare-un-codice-da-un-file-di-testo-esistente-e-a-300-dpi&#34;&gt;Creare un codice da un file di testo esistente e a 300 dpi&lt;/h3&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;qrencode -o test.png -d &lt;span class=&#34;m&#34;&gt;300&lt;/span&gt; -r input.txt&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id=&#34;creare-un-codice-in-file-vettoriale&#34;&gt;Creare un codice in file vettoriale&lt;/h3&gt;&#xA;&lt;div class=&#34;highlight&#34;&gt;&lt;pre tabindex=&#34;0&#34; class=&#34;chroma&#34;&gt;&lt;code class=&#34;language-bash&#34; data-lang=&#34;bash&#34;&gt;&lt;span class=&#34;line&#34;&gt;&lt;span class=&#34;cl&#34;&gt;qrencode -o test.eps -t eps -r input.txt&#xA;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;L&#39;articolo &lt;a href=&#34;https://www.aldolat.it/posts/2021/creare-qr-code-in-linux/&#34;&gt;Creare QR code in Linux&lt;/a&gt; è uno scritto di &lt;a href=&#34;https://www.aldolat.it/&#34;&gt;aldolat.it&lt;/a&gt;. Rispettane le &lt;a href=&#34;https://www.aldolat.it/info/#licenza&#34;&gt;condizioni di licenza&lt;/a&gt;.&lt;/p&gt;</content:encoded>
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            <title>Paperless e QRcode</title>
            <link>https://www.aldolat.it/posts/2012/paperless-e-qrcode/</link>
            <pubDate>Wed, 25 Apr 2012 07:43:00 +0000</pubDate>
            <author>aldolat@gmail.com (Aldo Latino)</author>
            <guid>https://www.aldolat.it/posts/2012/paperless-e-qrcode/</guid>
            <description>Un interessante approccio alla diminuzione della carta attorno a noi, facendo uso di Evernote e del codice QR:&#xA;Using QR codes is a wonderful and inexpensive way to tag real word objects and give them a physical context to your digital data–like the instruction manuals and warranty documents. J.T. Rubin, Going paperless: digitize instruction manuals and use qr codes to find them in context, 24 aprile 2012.&#xA;È anche interessante dare un&amp;rsquo;occhiata alla sua categoria Going paperless.</description>
            <content:encoded>&lt;p&gt;Un &lt;a href=&#34;http://www.jamierubin.net/2012/04/24/going-paperless-digitize-instruction-manuals-and-use-qr-codes-to-find-them-in-context/&#34;&gt;interessante approccio&lt;/a&gt; alla diminuzione della carta attorno a noi, facendo uso di Evernote e del codice QR:&lt;/p&gt;&#xA;&lt;blockquote&gt;&#xA;&lt;p&gt;Using QR codes is a wonderful and inexpensive way to tag real word objects and give them a physical context to your digital data–like the instruction manuals and warranty documents.&#xA;&lt;br&gt;&lt;br&gt;&#xA;&#xA;&lt;span class=&#34;sc&#34;&gt;J.T. Rubin&lt;/span&gt;, &lt;em&gt;Going paperless: digitize instruction manuals and use qr codes to find them in context&lt;/em&gt;, 24 aprile 2012.&lt;/p&gt;&#xA;&lt;/blockquote&gt;&#xA;&lt;p&gt;È anche interessante dare un&amp;rsquo;occhiata alla sua categoria &lt;em&gt;Going paperless&lt;/em&gt;.&lt;/p&gt;&#xA;&lt;p&gt;L&#39;articolo &lt;a href=&#34;https://www.aldolat.it/posts/2012/paperless-e-qrcode/&#34;&gt;Paperless e QRcode&lt;/a&gt; è uno scritto di &lt;a href=&#34;https://www.aldolat.it/&#34;&gt;aldolat.it&lt;/a&gt;. Rispettane le &lt;a href=&#34;https://www.aldolat.it/info/#licenza&#34;&gt;condizioni di licenza&lt;/a&gt;.&lt;/p&gt;</content:encoded>
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