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How to show line number when executing bash script

I have a test script which has a lot of commands and will generate lots of output, I use set -x or set -v and set -e , so the script would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem. Is there a m...
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MIN/MAX vs ORDER BY and LIMIT

... In a test with an indexed table with 470 million rows, both queries take 0.00 s. However, if we add to the queries a filter "WHERE field2=x", the query with LIMIT still takes 0.00 s and the query with MIN takes 0.21 s. ...
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Java packages com and org

...your class> example1: (here domain:- "stackoverflow.com", project:- "Test") com.stackoverfllow.test.handler.TestHandler example2: (here domain:- "www.google.co.in", project:- "My Proj") in.co.google.myproj.controller.MainController but for reserved domains like java.*, javax.*, sun.*,...
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A regex to match a substring that isn't followed by a certain other substring

... Try: /(?!.*bar)(?=.*foo)^(\w+)$/ Tests: blahfooblah # pass blahfooblahbarfail # fail somethingfoo # pass shouldbarfooshouldfail # fail barfoofail # fail Regular expression explanation NODE EXPLANAT...
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Can I have an IF block in DOS batch file?

...f if statements to handle that. Secondly, that %GPMANAGER_FOUND% == true test looks mighty suspicious to me. I don't know what the environment variable is set to or how you're setting it, but I very much doubt that the code you've shown will produce the result you're looking for. The following s...
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How to do stateless (session-less) & cookie-less authentication?

...e very little time to execute, even with multiple simultaneous users. Load testing here would definitely help though. If I read the question correctly, this would be your encrypted token mechanism - although, I would strongly suggest that you use a cryptographically random token of say 32 characters...
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When and why would you seal a class?

...ntreated is this even measureable with less then an insane number of crazy tests? – t3chb0t Aug 11 '17 at 12:18 4 ...
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Does a finally block run even if you throw a new Exception?

... Finally, block always executes. public class ExceptionTest { public static void someFunction(String input) throws Exception { try { if( input.equals("ABC") ) { System.out.println("Matched"); } } catch (Exception e) { throw new Excepti...
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The bare minimum needed to write a MSMQ sample application

... and even one full chapter of a book about Message Queue...But for a quick test all I need is to cover is this scenario, not even in a perfect way, just for a quick demo: ...
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Flexbox and Internet Explorer 11 (display:flex in ?)

...="Content-Type" content="text/html; charset=UTF-8" > <title>Flex Test</title> <style> html, body { margin: 0px; padding: 0px; height: 100vh; } .main { display: -webkit-flex; display: flex; -ms-flex-direction: row; flex-direction: row; ...