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<span class="date">31 October</span> <span> / </span>
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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<h1 class='entry-title'> [筆記] ubuntu 18.04 透過 dconf 修改系統 proxy / modify system proxy with dconf in ubuntu 18.04</h1>
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<p>最近在準備升級client 的作業系統,從 ubuntu 14.04 準備升級到 18.04 或明年的 20.04</p>
<p>因為公司政策的關係所以現在要連接internet ,需要申請</p>
<p>然後 user 再去系統的proxy 設定新增一個 PAC 檔</p>
<p>但是這個動作其實是去叫NetworkManager 這個服務</p>
<p>可是在18.04 上我會把這個服務關掉因為他會干擾我的DNS設定</p>
<p>所以想試試看有沒有辦法不使用 NetworkManager 服務</p>
<p>又能夠在 user level 修改 proxy 參數</p>
<p>就想到了用 dconf 來做</p>
<p>dconf 是在 ubuntu 底下很好用的工具</p>
<p>可以用來觀察、修改使用者層級(user level)的系統設定</p>
<p>不過有一些語法要注意</p>
<p>簡單說一下用法</p>
<p>觀察user level 系統變數的變化</p>
<p>開啟terminal 輸入以下指令</p>
<pre><code>dconf watch /
</code></pre>
<p>這個可以觀察user到底修改了些什麼</p>
<p>只要是透過右上角的系統設定修改的值</p>
<p>這個指令都可以觀察到,非常好用</p>
<p>當找到了要修改的 KEY</p>
<p>就可以用</p>
<pre><code>dconf read/write KEY
</code></pre>
<p>比如說我要修改proxy</p>
<p>我先用 dconf watch / 抓到了KEY是 /system/proxy/host</p>
<p>那我就可以用</p>
<pre><code>dconf write /system/proxy/http/host &quot;'192.168.1.7'&quot;
dconf write /system/proxy/http/port '3128'
</code></pre>
<p>來把系統的http proxy 改成 192.168.1.7:3128</p>
<p>要注意的是,上面的 host 是字串,要用<code>&quot;''&quot;</code>包起來</p>
<p>下面的只是數字,就不用外面的<code>&quot;&quot;</code></p>
<p>不過這修改好像還是必須要NetworkManager 生效才行</p>
<p>還需要再測試看看</p>
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