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<!doctype html>
<html class="no-js" lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>
Linux - Qu Blog
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<div class="article">
<a class="clearlink" href="16646973318866.html">
<h1>查看是否双通道</h1>
<div class="a-content">
<div class="a-content-text">
<p>相同 <code>Channel</code> 就是双通道了</p>
<h3 id="toc_0">方法 1</h3>
<p>显示内存大小和是否双通道</p>
<pre><code class="language-bash"> dmidecode -t 17 | awk 'BEGIN { FS=":"; OFS="\t" } /Size|Channel/ { line = (line ? line OFS : "") $2 } /^$/ { print line; line="RAM" }' | grep -iv 'no'
</code></pre>
<h3 id="toc_1">方法 2</h3>
<p>只是显示是否双通道</p>
<pre><code class="language-bash">dmidecode -t memory | grep Channel
</code></pre>
</div>
</div>
</a>
<div class="read-more clearfix">
<div class="more-left left">
<span class="date">2022/10/2</span>
<span>posted in </span>
<span class="posted-in"><a href='Linux.html'>Linux</a></span>
</div>
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<span class="comments">
<a href="http://blog.qudev.top/16646973318866.html#disqus_thread">comments</a>
</span>
</div>
</div>
</div><!-- article -->
<div class="article">
<a class="clearlink" href="16646972721295.html">
<h1>Ubuntu 合盖不休眠</h1>
<div class="a-content">
<div class="a-content-text">
<p>编辑下列文件：</p>
<pre><code class="language-shell">vim /etc/systemd/logind.conf
</code></pre>
<p><code>#HandlePowerKey</code> 按下电源键后的行为，默认 <code>power off</code><br/>
<code>#HandleSleepKey</code> 按下挂起键后的行为，默认 <code>suspend</code><br/>
<code>#HandleHibernateKey</code> 按下休眠键后的行为，默认 <code>hibernate</code><br/>
<code>#HandleLidSwitch</code> 合上笔记本盖后的行为，默认 <code>suspend</code>（改为 <code>ignore</code> ；即合盖不休眠）在原文件中，还要去掉前面的<code>#</code></p>
<p>然后将其中的：<br/>
<code>#HandleLidSwitch=suspend</code><br/>
改成下面，记得去掉“#”号：<br/>
<code>HandleLidSwitch=ignore</code></p>
<p>最后重启服务</p>
<pre><code class="language-shell">service systemd-logind restart
</code></pre>
</div>
</div>
</a>
<div class="read-more clearfix">
<div class="more-left left">
<span class="date">2022/10/2</span>
<span>posted in </span>
<span class="posted-in"><a href='Linux.html'>Linux</a></span>
</div>
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<span class="comments">
<a href="http://blog.qudev.top/16646972721295.html#disqus_thread">comments</a>
</span>
</div>
</div>
</div><!-- article -->
<div class="article">
<a class="clearlink" href="16646972141823.html">
<h1>ZFS 设置 ARC 大小</h1>
<div class="a-content">
<div class="a-content-text">
<h2 id="toc_0">永久</h2>
<ul>
<li>记得关掉虚拟机</li>
</ul>
<pre><code class="language-shell">nano /etc/modprobe.d/zfs.conf
</code></pre>
<pre><code class="language-shell"># Maximum ZFS ARC : 4 GB
options zfs zfs_arc_max=4294967296
# Minimum ZFS ARC : 2 GB
options zfs zfs_arc_mix=2147483648
</code></pre>
<pre><code class="language-shell">reboot
</code></pre>
<h2 id="toc_1">临时</h2>
<ul>
<li>重启后失效</li>
</ul>
<pre><code class="language-shell">echo 2147483648 >> /sys/module/zfs/parameters/zfs_arc_min
echo 4294967296 >> /sys/module/zfs/parameters/zfs_arc_max
</code></pre>
<h2 id="toc_2">更新 initramfs</h2>
<pre><code class="language-shell">update-initramfs -u
</code></pre>
<h2 id="toc_3">常用内存大小</h2>
<h3 id="toc_4">32G</h3>
<pre><code class="language-bash">34359738368
</code></pre>
<h3 id="toc_5">16G</h3>
<pre><code class="language-bash">17179869184
</code></pre>
<h3 id="toc_6">8G</h3>
<pre><code class="language-bash">8589934592
</code></pre>
<h3 id="toc_7">4G</h3>
<pre><code class="language-bash">4294967296
</code></pre>
<h3 id="toc_8">2G</h3>
<pre><code class="language-bash">2147483648
</code></pre>
<h3 id="toc_9">1G</h3>
<pre><code class="language-bash">1073741824
</code></pre>
</div>
</div>
</a>
<div class="read-more clearfix">
<div class="more-left left">
<span class="date">2022/10/2</span>
<span>posted in </span>
<span class="posted-in"><a href='Linux.html'>Linux</a></span>
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</span>
</div>
</div>
</div><!-- article -->
<div class="article">
<a class="clearlink" href="16646971948324.html">
<h1>Linux 创建服务</h1>
<div class="a-content">
<div class="a-content-text">
<h4 id="toc_0">服务路径</h4>
<pre><code class="language-shell">/lib/systemd/system
</code></pre>
<p>或者</p>
<pre><code class="language-shell">/usr/lib/systemd/system/
</code></pre>
<h3 id="toc_1">创建服务</h3>
<p>在 <code>/lib/systemd/system</code> 路径下新建 <code>testservice.service</code> 文件内容如下</p>
<pre><code class="language-shell">nano /lib/systemd/system/testservice.service
</code></pre>
<pre><code class="language-ini">[Unit]
Description=Clash Service
After=network.target
[Service]
Type=simple
User=nobody
Restart=on-failure
RestartSec=5s
ExecStart=/root/app/clash/clash -d /root/app/clash/
[Install]
WantedBy=multi-user.target
</code></pre>
<h3 id="toc_2">常用命令</h3>
<pre><code class="language-shell">#重新加载服务列表
systemctl daemon-reload
</code></pre>
<pre><code class="language-shell">#设为开机启动
systemctl enable testservice.service
</code></pre>
<pre><code class="language-shell">#启动服务
systemctl start testservice.service
</code></pre>
<pre><code class="language-shell">#重启服务
systemctl restart testservice.service
</code></pre>
<h3 id="toc_3">查看服务日志</h3>
<pre><code class="language-shell"># --no-pager
journalctl -u service-name.service --no-pager
</code></pre>
</div>
</div>
</a>
<div class="read-more clearfix">
<div class="more-left left">
<span class="date">2022/10/2</span>
<span>posted in </span>
<span class="posted-in"><a href='Linux.html'>Linux</a></span>
</div>
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<span class="comments">
<a href="http://blog.qudev.top/16646971948324.html#disqus_thread">comments</a>
</span>
</div>
</div>
</div><!-- article -->
<div class="article">
<a class="clearlink" href="16646971021104.html">
<h1>统计命令行使用占比</h1>
<div class="a-content">
<div class="a-content-text">
<pre><code class="language-text">history | awk '{CMD[$2]++;count++;}END { for (a in CMD)print CMD[a] " " CMD[a]/count*100 "% " a;}' | grep -v "./" | column -c3 -s " " -t | sort -nr | nl | head -n10
</code></pre>
<h2 id="toc_0">PS</h2>
<p>来自某位 V2EXer</p>
</div>
</div>
</a>
<div class="read-more clearfix">
<div class="more-left left">
<span class="date">2022/10/2</span>
<span>posted in </span>
<span class="posted-in"><a href='Linux.html'>Linux</a></span>
</div>
<div class="more-right right">
<span class="comments">
<a href="http://blog.qudev.top/16646971021104.html#disqus_thread">comments</a>
</span>
</div>
</div>
</div><!-- article -->
<div class="article">
<a class="clearlink" href="16646970321576.html">
<h1>搭建 Mac 的 TimeMachine 备份服务器</h1>
<div class="a-content">
<div class="a-content-text">
<h3 id="toc_0">安装 Netatalk</h3>
<pre><code class="language-bash">apt install netatalk avahi-daemon
</code></pre>
<h3 id="toc_1">配置 Netatalk</h3>
<pre><code class="language-bash"> nano /etc/netatalk/afp.conf
</code></pre>
<pre><code class="language-config">[Time Machine]
path = /tmbackup
valid users = tm
time machine = yes
</code></pre>
<h3 id="toc_2">创建用户和备份目录</h3>
<pre><code class="language-bash"># 创建用户
useradd tm
# 修改用户密码
passwd tm
# 创建备份目录
mkdir -p /tmbackup
# 修改目录权限
chown -R tm:tm /tmbackup
# 重启 netatalk 服务
service netatalk restart
```
### Mac 端配置
打开`系统偏好设置`中的`时间机器`,选择这个磁盘
### 参考
[搭建 Mac 的 TimeMachine 备份服务器](https://blog.1seo.top/wiki/Mac/%E6%90%AD%E5%BB%BAMac%E7%9A%84TimeMachine%E5%A4%87%E4%BB%BD%E6%9C%8D%E5%8A%A1%E5%99%A8/)
</code></pre>
</div>
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<span class="date">2022/10/2</span>
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</div>
</div><!-- article -->
<div class="article">
<a class="clearlink" href="15291142264885.html">
<h1>Linux下给移动硬盘分区</h1>
<div class="a-content">
<div class="a-content-text">
<p>最近申请到了一个PT账号,所以买了个树莓派准备把一块3T的闲置硬盘(当初准备放在PS4做外置硬盘的)挂在树莓派上做下载机.</p>
<p>一开始用的NTFS格式,但是查了下发现Linux下挂在NTFS兼容性不是很好,而且资源占用比较多,所以准备重新格式化一下(下面截图是在虚拟机下演示操作的)</p>
<h2 id="toc_0">查看磁盘信息</h2>
<p>命令<code>lsblk</code>可以查看目前挂在的硬盘,<code>sdb</code>就是挂载的USB硬盘</p>
<p><img src="media/15291142264885/%E5%B1%8F%E5%B9%95%E5%BF%AB%E7%85%A7%202018-06-16%2010.12.06.png" alt="屏幕快照 2018-06-16 10.12.06"/></p>
<h2 id="toc_1">分区</h2>
<pre><code class="language-bash">sudo fdisk /dev/sdb
</code></pre>
<p>进入分区模式</p>
<p>输入<code>m</code>来查看帮助信息</p>
<p><img src="media/15291142264885/%E5%B1%8F%E5%B9%95%E5%BF%AB%E7%85%A7%202018-06-16%2010.17.09.png" alt="屏幕快照 2018-06-16 10.17.09"/></p>
<p><code>n</code>新建分区,因为我是只分一个区所以一路按回车默认就行了</p>
<p><img src="media/15291142264885/%E5%B1%8F%E5%B9%95%E5%BF%AB%E7%85%A7%202018-06-16%2010.19.42.png" alt="屏幕快照 2018-06-16 10.19.42"/></p>
<p><code>w</code>保存并退出分区管理</p>
<h2 id="toc_2">格式化硬盘</h2>
<p>格式化硬盘,EXT4格式</p>
<pre><code class="language-bash">sudo mkfs -t ext4 /dev/sdb
</code></pre>
<p><img src="media/15291142264885/%E5%B1%8F%E5%B9%95%E5%BF%AB%E7%85%A7%202018-06-16%2010.23.32.png" alt="屏幕快照 2018-06-16 10.23.32"/></p>
<h2 id="toc_3">挂载硬盘</h2>
<pre><code class="language-bash">sudo mkdir /home/qu/usbdisk
sudo mount /dev/sdb /home/qu/usbdisk
</code></pre>
<p>上面是临时挂载的移动硬盘,如果想自动挂载的话可以修改<code>/etc/fstab</code>文件</p>
<pre><code class="language-bash">sudo vim /etc/fstab
</code></pre>
<p>在最后插入一行</p>
<p><code>/dev/sdb/ /home/qu/usbdisk ext4 default 0 0</code></p>
<p>下回系统重启之后就会自动将/dev/sdb磁盘挂载到/home/qu/usbdisk目录下了,格式为EXT3</p>
<p>第一个<code>0</code>:能否被dump备份命令作用:dump是一个用来作为备份的命令.通常这个参数的值为0或者1</p>
<table>
<thead>
<tr>
<th>代码</th>
<th>意义</th>
</tr>
</thead>
<tbody>
<tr>
<td>0</td>
<td>代表不要做dump备份</td>
</tr>
<tr>
<td>1</td>
<td>代表要每天进行dump的操作</td>
</tr>
<tr>
<td>2</td>
<td>代表不定日期的进行dump操作</td>
</tr>
</tbody>
</table>
<p>第二个<code>0</code>:是否检验扇区:开机的过程中,系统默认会以fsck检验我们系统是否为完整(clean).</p>
<table>
<thead>
<tr>
<th>代码</th>
<th>意义</th>
</tr>
</thead>
<tbody>
<tr>
<td>0</td>
<td>不要检验</td>
</tr>
<tr>
<td>1</td>
<td>最早检验(一般根目录会选择)</td>
</tr>
<tr>
<td>2</td>
<td>1级别检验完成之后进行检验</td>
</tr>
</tbody>
</table>
<p>我是默认都是0,不做备份不校验</p>
<p><img src="media/15291142264885/%E5%B1%8F%E5%B9%95%E5%BF%AB%E7%85%A7%202018-06-16%2010.30.14.png" alt="屏幕快照 2018-06-16 10.30.14"/></p>
<h2 id="toc_4">参考</h2>
<p><a href="https://blog.csdn.net/xyang81/article/details/51745683">Linux新增磁盘、分区、格式化和自动挂载</a></p>
<p><a href="https://www.cnblogs.com/qiyebao/p/4484047.html">Linux命令-自动挂载文件/etc/fstab功能详解[转]</a></p>
</div>
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<span class="date">2018/6/16</span>
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<a class="clearlink" href="15247502619814.html">
<h1>Ubuntu双网卡配置</h1>
<div class="a-content">
<div class="a-content-text">
<h2 id="toc_0">Ubuntu 17.10双网卡配置</h2>
<p>Ubuntu网络配置多年来一直在用NetworkManager,ifupdown等工具. 17.10引入netplan作为在Ubuntu中配置接口的标准声明性YAML语法</p>
<p>Ubuntu 17.10版本修改网络固定IP的方法跟其他版本不一样 不需要修改<code>/etc/network/interfaces</code>文件,而是通过在<code>/etc/netplan/</code>下创建一个自定义YAML配置文件来实现</p>
<h3 id="toc_1">创建一个YAML文件</h3>
<pre><code class="language-bash">sudo vim /etc/netplan/01-netcfg.yaml
</code></pre>
<p>以我的配置为例,我的第二个网卡名称是<code>enp0s8</code>,设置成固定IP方便宿主机SSH远程</p>
<p>YAML内容:</p>
<pre><code class="language-text"># This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
enp0s8:
dhcp4: no
addresses: [192.168.56.2/24]
</code></pre>
<p>确认配置并重启</p>
<pre><code class="language-bash">sudo netplan apply
sudo init 6
</code></pre>
<h2 id="toc_2">Ubuntu 17.10以下双网卡配置</h2>
<h3 id="toc_3">修改Ubuntu的网络配置文件</h3>
<pre><code class="language-bash">sudo vim /etc/network/interfaces
</code></pre>
<p>配置如下</p>
<pre><code class="language-bash"># The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet dhcp
#the second eth1
auto eth1
iface eth1 inet static
address 192.168.56.2
netmask 255.255.255.0
</code></pre>
<ul>
<li>eth0为NAT模式的网卡,eth1为Host-only的网卡</li>
<li>主机和虚拟机通信用192.168.56.*这个网段</li>
</ul>
<p>重启虚拟机</p>
<h2 id="toc_4">参考</h2>
<p><a href="https://websiteforstudents.com/configuring-static-ips-ubuntu-17-10-servers/">CONFIGURING STATIC IP ADDRESSES ON UBUNTU 17.10 SERVERS</a></p>
<p><a href="https://wiki.ubuntu.com/Netplan">NetPlan</a></p>
<p><a href="http://www.linuxidc.com/Linux/2017-10/148112.htm">Ubuntu17.10新特性</a></p>
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<span class="date">2018/4/26</span>
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