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---
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title: "Transfer File Content Using Xclip in Terminal"
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date: 2019-05-17T12:18:54+08:00
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draft: false
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noSummary: false
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featuredImage: "https://h.cowbay.org/images/post-default-11.jpg"
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categories: ['linux']
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tags: ['linux']
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author: "Eric Chang"
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---
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工作上常會需要用ssh登入遠端主機檢查LOG，有必要的時候，還要把log複製回本機來處理。
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以前都是傻傻的用 scp 傳檔案
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之前就記得有這個xclip/xsel 可以用，但是一直沒有弄清楚怎麼執行
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早上研究了一下，順便做個筆記。
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<!--more-->
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### 1. ssh 要加上 -X ###
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不然會出現
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```
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Error: Can't open display: (null)
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```
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這種錯誤訊息
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```
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-X Enables X11 forwarding. This can also be specified on a per-host basis in a configuration file.
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X11 forwarding should be enabled with caution. Users with the ability to bypass file permissions on the remote host (for the user's X
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authorization database) can access the local X11 display through the forwarded connection. An attacker may then be able to perform activi‐
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ties such as keystroke monitoring.
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For this reason, X11 forwarding is subjected to X11 SECURITY extension restrictions by default. Please refer to the ssh -Y option and the
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ForwardX11Trusted directive in ssh_config(5) for more information.
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```
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### 2. remote 主機要安裝 xclip / xsel ###
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```
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2019-05-17 10:12:20 [minion@hqs019 ~]$ sudo apt install xsel
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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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The following NEW packages will be installed:
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xsel
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0 upgraded, 1 newly installed, 0 to remove and 73 not upgraded.
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Need to get 19.0 kB of archives.
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After this operation, 47.1 kB of additional disk space will be used.
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Get:1 http://ftp.tw.debian.org/ubuntu bionic/universe amd64 xsel amd64 1.2.0-4 [19.0 kB]
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Fetched 19.0 kB in 0s (80.3 kB/s)
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Selecting previously unselected package xsel.
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(Reading database ... 161032 files and directories currently installed.)
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Preparing to unpack .../xsel_1.2.0-4_amd64.deb ...
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Unpacking xsel (1.2.0-4) ...
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Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
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Setting up xsel (1.2.0-4) ...
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2019-05-17 10:13:32 [minion@hqs019 ~]$ sudo apt install xclip
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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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The following NEW packages will be installed:
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xclip
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0 upgraded, 1 newly installed, 0 to remove and 73 not upgraded.
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Need to get 17.5 kB of archives.
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After this operation, 52.2 kB of additional disk space will be used.
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Get:1 http://ftp.tw.debian.org/ubuntu bionic/main amd64 xclip amd64 0.12+svn84-4build1 [17.5 kB]
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Fetched 17.5 kB in 1s (16.2 kB/s)
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Selecting previously unselected package xclip.
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(Reading database ... 161038 files and directories currently installed.)
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Preparing to unpack .../xclip_0.12+svn84-4build1_amd64.deb ...
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Unpacking xclip (0.12+svn84-4build1) ...
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Setting up xclip (0.12+svn84-4build1) ...
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Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
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```
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### 3.執行方式
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執行以下指令，就可以把遠端的檔案內容傳送到「系統剪貼簿」，在本機就可以直接貼上了
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```
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cat copy_neonexus.csv |xclip -selection clipboard
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```
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