https://blog.ffff65535.com/categories/linux/Recent content in Linux on ffff65535Hugozh-cnWed, 18 Oct 2023 00:00:00 +0800https://blog.ffff65535.com/posts/2023/10/18/linux-uses-key-logins-and-disables-password-logins/Wed, 18 Oct 2023 00:00:00 +0800https://blog.ffff65535.com/posts/2023/10/18/linux-uses-key-logins-and-disables-password-logins/<h5 id="生成密钥">生成密钥</h5> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span><span style="color:#75715e"># 生成rsa密钥对</span> </span></span><span style="display:flex;"><span>ssh-keygen -t rsa </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span>Generating public/private rsa key pair. </span></span><span style="display:flex;"><span>Enter file in which to save the key <span style="color:#f92672">(</span>/root/.ssh/id_rsa<span style="color:#f92672">)</span>: <span style="color:#75715e"># 直接enter</span> </span></span><span style="display:flex;"><span>Enter passphrase <span style="color:#f92672">(</span>empty <span style="color:#66d9ef">for</span> no passphrase<span style="color:#f92672">)</span>: <span style="color:#75715e"># 直接enter</span> </span></span><span style="display:flex;"><span>Enter same passphrase again: <span style="color:#75715e"># 直接enter</span> </span></span><span style="display:flex;"><span>Your identification has been saved in /root/.ssh/id_rsa <span style="color:#75715e"># 生成的私钥</span> </span></span><span style="display:flex;"><span>Your public key has been saved in /root/.ssh/id_rsa.pub <span style="color:#75715e"># 生成的公钥</span> </span></span></code></pre></div><h5 id="安装公钥">安装公钥</h5> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span><span style="color:#75715e"># 进入公钥目录</span> </span></span><span style="display:flex;"><span>cd /root/.ssh/ </span></span><span style="display:flex;"><span><span style="color:#75715e"># 将公钥写入 /root/.ssh/authorized_keys文件</span> </span></span><span style="display:flex;"><span>cat id_rsa.pub &gt;&gt; authorized_keys </span></span></code></pre></div><h5 id="设置ssh权限防止无法登录">设置.ssh权限，防止无法登录</h5> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>chmod <span style="color:#ae81ff">600</span> authorized_keys </span></span><span style="display:flex;"><span>chmod <span style="color:#ae81ff">700</span> ~/.ssh </span></span></code></pre></div><h5 id="设置ssh打开密钥登录功能">设置ssh打开密钥登录功能</h5> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>vim /etc/ssh/sshd_config </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 启用密钥验证</span> </span></span><span style="display:flex;"><span>PubkeyAuthentication yes </span></span><span style="display:flex;"><span><span style="color:#75715e"># 关闭密码登录</span> </span></span><span style="display:flex;"><span>PasswordAuthentication no </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 允许root用户通过ssh登录</span> </span></span><span style="display:flex;"><span>PermitRootLogin yes </span></span></code></pre></div><h1 id="重启ssh服务">重启ssh服务</h1> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>sudo systemctl restart sshd </span></span></code></pre></div><h5 id="如果可以使用密码登录">如果可以使用密码登录</h5> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>cat /etc/ssh/sshd_config.d/50-cloud-init.conf </span></span><span style="display:flex;"><span>PasswordAuthentication yes </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 将yes改为no 或者直接删除该文件(50-cloud-init.conf)</span> </span></span><span style="display:flex;"><span>PasswordAuthentication no </span></span></code></pre></div>https://blog.ffff65535.com/posts/2023/04/13/linux-adjusts-the-lvm-partition/Thu, 13 Apr 2023 00:00:00 +0800https://blog.ffff65535.com/posts/2023/04/13/linux-adjusts-the-lvm-partition/<h1 id="lv分区调整">lv分区调整</h1> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>df -h </span></span><span style="display:flex;"><span>umount /home </span></span><span style="display:flex;"><span>e2fsck -f /dev/mapper/debian--vg-home </span></span><span style="display:flex;"><span>resize2fs /dev/mapper/debian--vg-home 5G </span></span><span style="display:flex;"><span>lvreduce -L 5G /dev/mapper/debian--vg-home </span></span><span style="display:flex;"><span>mount /home </span></span><span style="display:flex;"><span>df -h </span></span></code></pre></div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>lvextend -L 5G /dev/mapper/debian--vg-home <span style="color:#75715e">#增大至5G</span> </span></span><span style="display:flex;"><span>lvextend -L +5G /dev/mapper/debian--vg-home <span style="color:#75715e">#增加5G</span> </span></span><span style="display:flex;"><span>lvreduce -L 5G /dev/mapper/debian--vg-home <span style="color:#75715e">#减小至5G</span> </span></span><span style="display:flex;"><span>lvreduce -L -5G /dev/mapper/debian--vg-home <span style="color:#75715e">#减小5G</span> </span></span></code></pre></div><h1 id="创建lv分区">创建lv分区</h1> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>lvcreate -L 200G VG名字 -n LV名字 </span></span><span style="display:flex;"><span>例：lvcreate -L 200G vg -n system </span></span></code></pre></div><h1 id="lvm创建swap">lvm创建swap</h1> <pre tabindex="0"><code class="language-agsl" data-lang="agsl"> # 创建lv [-C y]参数 该参数用来指定逻辑卷的空间分配是连续的 lvcreate -C y -L 4G debian-vg -n swap_1 # 格式化 root@debian:~# mkswap /dev/debian-vg/swap_1 # vim /etc/fstab 添加 /dev/mapper/debian--vg-swap_1 swap swap sw 0 0 swapon -va </code></pre>https://blog.ffff65535.com/posts/2023/01/24/ubuntu-git-pull-fatal-could-not-read-from-remote-repository/Tue, 24 Jan 2023 00:28:00 +0800https://blog.ffff65535.com/posts/2023/01/24/ubuntu-git-pull-fatal-could-not-read-from-remote-repository/<p>使用git pull时提示</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>kex_exchange_identification: Connection closed by remote host </span></span><span style="display:flex;"><span>Connection closed by 20.205.243.166 port <span style="color:#ae81ff">22</span> </span></span><span style="display:flex;"><span>fatal: 无法读取远程仓库。 请确认您有正确的访问权限并且仓库存在。 </span></span><span style="display:flex;"><span>或 </span></span><span style="display:flex;"><span>fatal: Could not read from remote repository. </span></span></code></pre></div><p>可能是使用了网络代理导致的，可以使用443端口进行ssh连接 可参考一下链接进行处理 <a href="https://docs.github.com/en/authentication/troubleshooting-ssh/using-ssh-over-the-https-port">https://docs.github.com/en/authentication/troubleshooting-ssh/using-ssh-over-the-https-port</a></p>https://blog.ffff65535.com/posts/2022/05/12/debian-install-graphicsmagick/Thu, 12 May 2022 21:49:10 +0800https://blog.ffff65535.com/posts/2022/05/12/debian-install-graphicsmagick/<p>先安装一堆乱七八糟的库，具体是干啥的，我懒得细看，一股脑全装上去了</p> <p>可以参考这两个链接</p> <ol> <li><a href="http://www.graphicsmagick.org/README.html">http://www.graphicsmagick.org/README.html</a></li> <li><a href="http://www.graphicsmagick.org/INSTALL-unix.html">http://www.graphicsmagick.org/INSTALL-unix.html</a></li> </ol> <p> <figure> <img src="./graphicsmagick-debian-packages.png" alt="GraphicsMagick debian packages" /> </figure> </p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#75715e"># 从数码相机读取原始图像。当使用通用 RAW 文件格式扩展名读取文件时，会自动调用 Dcraw。</span> </span></span><span style="display:flex;"><span>apt install dcraw </span></span><span style="display:flex;"><span>apt install fonts-urw-base35 </span></span><span style="display:flex;"><span><span style="color:#75715e"># 阅读 Postscript 或便携式文档格式 (PDF)。</span> </span></span><span style="display:flex;"><span>apt install ghostscript </span></span><span style="display:flex;"><span><span style="color:#75715e"># 读取 HP-GL 图像格式。请注意，HPGL 是一种绘图仪文件格式。HP 打印机通常接受 PCL 格式而不是 HPGL 格式。Ghostscript（见上文）也是必需的。</span> </span></span><span style="display:flex;"><span>apt install hp2xx </span></span><span style="display:flex;"><span><span style="color:#75715e"># 这玩意安装太慢了</span> </span></span><span style="display:flex;"><span>apt install ttf-mscorefonts-installer </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span>apt install libbz2-dev </span></span><span style="display:flex;"><span>apt install libfreetype6-dev </span></span><span style="display:flex;"><span>apt install libjbig-dev </span></span><span style="display:flex;"><span>apt install liblcms2-dev </span></span><span style="display:flex;"><span>apt install liblzma-dev </span></span><span style="display:flex;"><span>apt install libpng-dev </span></span><span style="display:flex;"><span>apt install libtiff-dev </span></span><span style="display:flex;"><span>apt install libtool </span></span><span style="display:flex;"><span>apt install libwebp-dev </span></span><span style="display:flex;"><span>apt install libwmf-dev </span></span><span style="display:flex;"><span>apt install libx11-dev </span></span><span style="display:flex;"><span>apt install libxdmcp-dev </span></span><span style="display:flex;"><span>apt install libxext-dev </span></span><span style="display:flex;"><span>apt install libxft-dev </span></span><span style="display:flex;"><span>apt install libxml2-dev </span></span><span style="display:flex;"><span>apt install libxt-dev </span></span><span style="display:flex;"><span>apt install libzstd-dev </span></span><span style="display:flex;"><span>apt install zlib1g-dev </span></span><span style="display:flex;"><span>apt install libperl-dev </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># heif图片支持</span> </span></span><span style="display:flex;"><span>apt install libjpeg-dev </span></span><span style="display:flex;"><span>apt install libheif-dev </span></span><span style="display:flex;"><span>apt install libde265-dev </span></span></code></pre></div><h2 id="安装graphicsmagick">安装GraphicsMagick</h2> <p>有两种安装方法</p>