Daily push

2019-05-17 12:29:13 +08:00
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+---
+title: "Transfer File Content Using Xclip in Terminal"
+date: 2019-05-17T12:18:54+08:00
+draft: false
+
+noSummary: false
+featuredImage: "https://h.cowbay.org/images/post-default-11.jpg"
+categories: ['linux']
+tags: ['linux']
+author: "Eric Chang"
+---
+
+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。
+
+以前都是傻傻的用 scp 傳檔案
+
+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
+
+早上研究了一下，順便做個筆記。
+
+
+<!--more-->
+### 1. ssh 要加上 -X ###
+不然會出現 
+
+```
+Error: Can't open display: (null)
+```
+
+這種錯誤訊息
+
+```
+-X      Enables X11 forwarding.  This can also be specified on a per-host basis in a configuration file.
+
+             X11 forwarding should be enabled with caution.  Users with the ability to bypass file permissions on the remote host (for the user's X
+             authorization database) can access the local X11 display through the forwarded connection.  An attacker may then be able to perform activi‐
+             ties such as keystroke monitoring.
+
+             For this reason, X11 forwarding is subjected to X11 SECURITY extension restrictions by default.  Please refer to the ssh -Y option and the
+             ForwardX11Trusted directive in ssh_config(5) for more information.
+```
+
+### 2. remote 主機要安裝 xclip / xsel ###
+```
+2019-05-17 10:12:20 [minion@hqs019 ~]$ sudo apt install xsel
+Reading package lists... Done
+Building dependency tree       
+Reading state information... Done
+The following NEW packages will be installed:
+  xsel
+0 upgraded, 1 newly installed, 0 to remove and 73 not upgraded.
+Need to get 19.0 kB of archives.
+After this operation, 47.1 kB of additional disk space will be used.
+Get:1 http://ftp.tw.debian.org/ubuntu bionic/universe amd64 xsel amd64 1.2.0-4 [19.0 kB]
+Fetched 19.0 kB in 0s (80.3 kB/s)
+Selecting previously unselected package xsel.
+(Reading database ... 161032 files and directories currently installed.)
+Preparing to unpack .../xsel_1.2.0-4_amd64.deb ...
+Unpacking xsel (1.2.0-4) ...
+Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
+Setting up xsel (1.2.0-4) ...
+
+2019-05-17 10:13:32 [minion@hqs019 ~]$ sudo apt install xclip
+Reading package lists... Done
+Building dependency tree       
+Reading state information... Done
+The following NEW packages will be installed:
+  xclip
+0 upgraded, 1 newly installed, 0 to remove and 73 not upgraded.
+Need to get 17.5 kB of archives.
+After this operation, 52.2 kB of additional disk space will be used.
+Get:1 http://ftp.tw.debian.org/ubuntu bionic/main amd64 xclip amd64 0.12+svn84-4build1 [17.5 kB]
+Fetched 17.5 kB in 1s (16.2 kB/s)
+Selecting previously unselected package xclip.
+(Reading database ... 161038 files and directories currently installed.)
+Preparing to unpack .../xclip_0.12+svn84-4build1_amd64.deb ...
+Unpacking xclip (0.12+svn84-4build1) ...
+Setting up xclip (0.12+svn84-4build1) ...
+Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
+```
+
+### 3.執行方式 
+
+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
+
+
+```
+cat copy_neonexus.csv |xclip -selection clipboard
+```