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"articleSection" : "post",
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"name" : "[筆記] 用ubuntu livecd 救援群暉 synology NAS內的資料 \/ rescue synology nas with ubuntu livecd",
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"headline" : "[筆記] 用ubuntu livecd 救援群暉 synology NAS內的資料 \/ rescue synology nas with ubuntu livecd",
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"description" : "\x3cp\x3e2020\/01\/02 , 2020年上工的第一天，群暉的 DS415\x2b NAS 掛了！\x3c\/p\x3e\n\n\x3cp\x3e因為群暉的文件在最關鍵的一步寫得亂七八糟！\x3c\/p\x3e\n\n\x3cp\x3e所以在這邊紀錄一下我操作的步驟！\x3c\/p\x3e",
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"author" : "Eric Chang",
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"copyrightYear" : "2020",
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"datePublished": "2020-01-03 15:43:45 \x2b0800 CST",
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<title>[筆記] 用ubuntu livecd 救援群暉 synology NAS內的資料 / rescue synology nas with ubuntu livecd </title>
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<span class="date">03 January</span> <span> / </span>
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<span class="author">
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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<span> / </span>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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<div class='entry-header'>
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<h1 class='entry-title'> [筆記] 用ubuntu livecd 救援群暉 synology NAS內的資料 / rescue synology nas with ubuntu livecd</h1>
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<article>
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<p>2020/01/02 , 2020年上工的第一天，群暉的 DS415+ NAS 掛了！</p>
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<p>因為群暉的文件在最關鍵的一步寫得亂七八糟！</p>
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<p>所以在這邊紀錄一下我操作的步驟！</p>
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<h4 id="建立可開機的ubuntu-隨身碟">建立可開機的ubuntu 隨身碟</h4>
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<p>建立 bootable ubuntu flash 的步驟，請參考底下網頁介紹，這邊就不多說了</p>
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<p><a href="https://tutorials.ubuntu.com/tutorial/tutorial-create-a-usb-stick-on-ubuntu#0">https://tutorials.ubuntu.com/tutorial/tutorial-create-a-usb-stick-on-ubuntu#0</a></p>
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<h4 id="把nas上的硬碟接上pc">把NAS上的硬碟接上PC</h4>
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<p>還好這次的NAS只有四顆，如果有八顆，我去哪裡生可以接八顆硬碟的主機…</p>
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<h4 id="用隨身碟開機進入ubuntu-live-環境">用隨身碟開機進入ubuntu Live 環境</h4>
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<p>懶人沒截圖</p>
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<h4 id="安裝必要套件">安裝必要套件</h4>
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<p>進入 ubuntu Live 之後，按 ctal + alt + t</p>
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<p>開啟 terminal ，然後先安裝 mdadm & lvm2</p>
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<pre><code>ubuntu@ubuntu:~$ sudo apt install mdadm lvm2
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Reading package lists... Done
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Building dependency tree
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Reading state information... Done
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Suggested packages:
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thin-provisioning-tools default-mta | mail-transport-agent dracut-core
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The following NEW packages will be installed:
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mdadm
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The following packages will be upgraded:
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lvm2
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1 upgraded, 1 newly installed, 0 to remove and 780 not upgraded.
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Need to get 1,346 kB of archives.
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After this operation, 1,237 kB of additional disk space will be used.
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Get:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 lvm2 amd64 2.02.176-4.1ubuntu3.18.04.2 [930 kB]
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Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 mdadm amd64 4.1~rc1-3~ubuntu18.04.2 [416 kB]
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Fetched 1,346 kB in 3s (501 kB/s)
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....
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...
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...
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以下省略
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</code></pre>
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<h4 id="scan-raid-and-lvm">scan raid and lvm</h4>
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<p>接下來先換成 root 操作</p>
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<pre><code>ubuntu@ubuntu:~$ sudo su -
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</code></pre>
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<p>然後掃描 raid & LVM</p>
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<pre><code>root@ubuntu:~# mdadm -Asf && vgchange -ay
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mdadm: /dev/md/2 has been started with 4 drives.
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2 logical volume(s) in volume group "vg1" now active
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</code></pre>
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<p>COOL！ 原本的VG出現了！</p>
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<pre><code>root@ubuntu:~# vgdisplay
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--- Volume group ---
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VG Name vg1
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System ID
|
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Format lvm2
|
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Metadata Areas 1
|
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Metadata Sequence No 3
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VG Access read/write
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VG Status resizable
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MAX LV 0
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Cur LV 2
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Open LV 0
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Max PV 0
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Cur PV 1
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Act PV 1
|
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|
|
VG Size 5.44 TiB
|
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PE Size 4.00 MiB
|
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|
|
Total PE 1427264
|
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Alloc PE / Size 1427264 / 5.44 TiB
|
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Free PE / Size 0 / 0
|
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|
|
VG UUID O1c8Uw-JmKy-EiKt-92OB-3K3y-roMi-9NUZ6H
|
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</code></pre>
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<p>也可以看到 RAID 資訊了！</p>
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|
<pre><code>root@ubuntu:~# mdadm -D /dev/md2
|
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|
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/dev/md2:
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|
|
Version : 1.2
|
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|
|
Creation Time : Thu Oct 13 07:26:12 2016
|
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|
|
Raid Level : raid5
|
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|
|
Array Size : 5846077632 (5575.25 GiB 5986.38 GB)
|
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Used Dev Size : 1948692544 (1858.42 GiB 1995.46 GB)
|
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|
Raid Devices : 4
|
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|
Total Devices : 4
|
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|
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Persistence : Superblock is persistent
|
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|
|
Update Time : Thu Jan 2 01:48:34 2020
|
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|
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State : clean
|
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|
|
Active Devices : 4
|
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|
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Working Devices : 4
|
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Failed Devices : 0
|
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Spare Devices : 0
|
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|
Layout : left-symmetric
|
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|
|
Chunk Size : 64K
|
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Consistency Policy : resync
|
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|
Name : video:2
|
|
|
|
|
UUID : 18f6706d:91eaaec9:5b0ba8da:e32481e3
|
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|
|
Events : 96
|
|
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|
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|
|
|
Number Major Minor RaidDevice State
|
|
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|
|
0 8 51 0 active sync /dev/sdd3
|
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|
|
1 8 35 1 active sync /dev/sdc3
|
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|
|
2 8 19 2 active sync /dev/sdb3
|
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|
|
3 8 3 3 active sync /dev/sda3
|
|
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|
|
</code></pre>
|
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<p>然後就會發生我之前寫的這篇的狀況</p>
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<p><a href="https://h.cowbay.org/post/what-a-piss-in-synology-document/">https://h.cowbay.org/post/what-a-piss-in-synology-document/</a></p>
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<p>問題發生了，總是要想辦法解決</p>
|
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|
|
<h4 id="scan-lv">scan lv</h4>
|
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|
|
<pre><code>root@ubuntu:~# lvscan
|
|
|
|
|
ACTIVE '/dev/vg1/syno_vg_reserved_area' [12.00 MiB] inherit
|
|
|
|
|
ACTIVE '/dev/vg1/volume_1' [5.44 TiB] inherit
|
|
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|
|
</code></pre>
|
|
|
|
|
|
|
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|
|
<p>OK ，在 vg1 底下有兩個 volume ，看大小來判斷，第二個是我們要的</p>
|
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|
<p>用底下的指令就可以掛載了</p>
|
|
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|
|
<pre><code>mount /dev/vg1/volume_1 /mnt
|
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|
|
</code></pre>
|
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|
|
<p>請依照自己的環境，把第一個路徑改掉，如果要掛載到別的目錄，那也把第二個 /mnt 改掉</p>
|
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|
|
<pre><code>root@ubuntu:/dev# mount /dev/vg1/volume_1 /mnt
|
|
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|
|
root@ubuntu:/dev# cd /mnt
|
|
|
|
|
root@ubuntu:/mnt# ls
|
|
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|
|
@appstore @database @EP_trash @MailScanner @S2S
|
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|
|
|
aquota.group @download @iSCSITrg music synoquota.db
|
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|
|
aquota.user @eaDir lost+found nfsforprox @tmp
|
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|
|
@clamav @EP @maillog photo video
|
|
|
|
|
</code></pre>
|
|
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|
|
<p>OK，可以看到原本NAS 下的目錄了，接下來就可以進行檔案複製了！</p>
|
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</article>
|
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</div>
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<div class='entry-meta-bottom'>
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<div class="entry-categories"><p><span>Categories</span>
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<a href="/categories/%E7%AD%86%E8%A8%98" title="View all posts in 筆記">筆記</a>
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</p>
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</div>
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<div class="entry-tags"><p><span>Tags</span>
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<a href="/tags/synology" title="View all posts tagged synology">synology</a>
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<a href="/tags/nas" title="View all posts tagged nas">nas</a>
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</p></div> </div>
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<div class="author">
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<img alt='Eric Chang' src="https://www.gravatar.com/avatar/23f8ed94e007297499ac8df1641b3ff5?s=100&d=identicon" class='avatar avatar-72 photo' height='72' width='72'>
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<span>
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Written by:<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a> </span>
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</div>
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<div class="bio">
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<p>塵世裡一個迷途小書僮</p>
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<div class="menu">
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<ul id="menu-footer-items" class="menu-footer-items">
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</ul>
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</div> </div>
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<ul class="social-media-icons">
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<li>
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<a class="facebook" target="_blank"
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href="full%20Social%20profile%20url%20in%20facebook" >
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<i class="fab fa-facebook-f" title="facebook"></i>
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<span class="screen-reader-text">facebook</span>
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</a>
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</li>
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<li>
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<a class="googleplus" target="_blank"
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href="full%20profile%20url%20in%20googleplus" >
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<i class="fab fa-google-plus-g" title="googleplus"></i>
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<span class="screen-reader-text">googleplus</span>
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</a>
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</li>
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<li>
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<a href="chang0206" class="twitter" target="_blank">
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<i class="fab fa-twitter-square" title="twitter"></i>
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<span class="screen-reader-text">twitter</span>
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</a>
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</li>
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<li>
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<a href="chang0206" class="instagram" target="_blank">
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<i class="fab fa-instagram" title="instagram"></i>
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<span class="screen-reader-text">instagram</span>
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</a>
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</li>
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<li>
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<a href="mailto:mc@hotshraingmy.info" class="email">
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<i class="fas fa-envelope" title="email"></i>
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<span class="screen-reader-text">email</span>
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</a>
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</li>
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<li>
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<a href="full%20profile%20url%20in%20linkedin" class="linkedin" target="_blank">
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<i class="fab fa-linkedin-in" title="linkedin"></i>
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<span class="screen-reader-text">linkedin</span>
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</a>
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</li>
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<li>
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<a href="full%20profile%20url%20in%20stackoverflow" class="stackoverflow" target="_blank">
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<i class="fab fa-stack-overflow" title="stackoverflow"></i>
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<span class="screen-reader-text">stackoverflow</span>
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</a>
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</li>
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<li>
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<a href="changchichung" class="github" target="_blank">
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<i class="fab fa-github" title="github"></i>
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<span class="screen-reader-text">github</span>
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</a>
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</li>
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<li>
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<a href="full%20profile%20url%20in%20pinterest" class="pinterest" target="_blank">
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<i class="fab fa-pinterest" title="pinterest"></i>
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<span class="screen-reader-text">pinterest</span>
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</a>
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</li>
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<li>
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<a href="https://h.cowbay.org/index.xml" data-animate-hover="pulse" class="rss" target="_blank">
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<i class="fas fa-rss" title="rss"></i>
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<span class="screen-reader-text">rss</span>
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</a>
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</li>
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</ul> <div class="design-credit">
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<p>© 2018 Göran Svensson</p>
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<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<p>A port of Tracks by Compete Themes.</p>
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</div>
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</footer>
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</div>
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<script src="https://h.cowbay.org/js/jquery.min.js"></script>
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<script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
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