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Bash tool to get nth line from a file
Is there a "canonical" way of doing that? I've been using head -n | tail -1 which does the trick, but I've been wondering if there's a Bash tool that specifically extracts a line (or a range of lines) from a file.
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How to read a .xlsx file using the pandas Library in iPython?
I want to read a .xlsx file using the Pandas Library of python and port the data to a postgreSQL table.
6 Answers
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When to use , tag files, composite components and/or custom components?
I started using JSF 2.0 with Facelets recently and got puzzled by new composite components knowing existing <ui:include> and other templating techniques offered by Facelets 1.x.
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App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...并工具
本文档最初由米尔斯学院（Mills College）的 Kate Feeney 为 AI Classic 编写。该计划在她的论文通过 App Inventor 鼓励协作 中进行了讨论。
该工具作为 Java 程序在 App Inventor 外部运行，需要在计算机上安装 Java 才能使用它。
如...
SPAN vs DIV (inline-block)
...re any reason to use a <div style="display:inline-block"> instead of a <span> to layout a webpage?
6 Answer...
Is it possible to set the equivalent of a src attribute of an img tag in CSS?
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Use content:url("image.jpg").
Full working solution (Live Demo):
<!doctype html>
<style>
.MyClass123{
content:url("http://imgur.com/SZ8Cm.jpg");
}
</style>
<img class="MyClass123"/>
Tested and working:
Chro...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
I'm trying to upload a file using PrimeFaces, but the fileUploadListener method isn't being invoked after the upload finishes.
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What's the difference between unit, functional, acceptance, and integration tests? [closed]
What is the difference between unit, functional, acceptance, and integration testing (and any other types of tests that I failed to mention)?
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MySQL: @variable vs. variable. What's the difference?
In another question I posted someone told me that there is a difference between:
4 Answers
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How to use Elasticsearch with MongoDB?
I have gone through many blogs and sites about configuring Elasticsearch for MongoDB to index Collections in MongoDB but none of them were straightforward.
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