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How to kill a child process after a given timeout in Bash?

...$! # Get command PID while : ; do PID=$( pgrep -P $SUBSHELL yes ) test "$PID" = "" || break sleep 1 done # Open pipe for writing { exec 4>finished.pipe ; while : ; do sleep 1000; done } & read -t 3 FINISHED <finished.pipe if [ "$FINISHED" = finished ] ; then echo 'Subpr...
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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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Memory address of variables in Java

...nError("Not supported"); } System.out.println(); } I set up this test : //hashcode System.out.println("Hashcode : "+myObject.hashCode()); System.out.println("Hashcode : "+System.identityHashCode(myObject)); System.out.println("Hashcode (HEX) : "+Integer.toHexSt...
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Get cursor position (in characters) within a text Input field

... Are you testing that on IE? That whole if section is executed only on IE. In IE there is only a global selection, that's why it's document.selection, not field.selection or something. Also, it was possible in IE 7 (don't know if it i...
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Java Embedded Databases Comparison [closed]

... Either HSQLDB - Used by OpenOffice, tested and stable. It's easy to use. If you want to edit your db-data, you can just open the file and edit the insert statements. or H2 - Said to be faster (by the developer, who originally designed hsqldb, too) Which o...
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How to install plugins to Sublime Text 2 editor?

... 'Install Package Control' instead of following the install instructions. (Tested on Build 3126) share | improve this answer | follow | ...
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How can I set multiple CSS styles in JavaScript?

... @kennebec I've conducted a jsperf test and found that applying multiple css rules in a sequence as opposed to using the cssText method is faster: jsperf.com/csstext-vs-multiple-css-rules/4 – Andrei Oniga Mar 13 '12 at 7:...
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Counting DISTINCT over multiple columns

... in my tests (using SET SHOWPLAN_ALL ON), it had the same execution plan and exact same TotalSubtreeCost – KM. Sep 24 '09 at 13:43 ...
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Getting all selected checkboxes in an array

... I didnt test it but it should work <script type="text/javascript"> var selected = new Array(); $(document).ready(function() { $("input:checkbox[name=type]:checked").each(function() { selected.push($(this).val()); ...
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Remove menu and status bars in TinyMCE 4

...file edit' You can define your own menus like this: menu : { test: {title: 'Test Menu', items: 'newdocument'} }, menubar: 'test' share | improve this answer | ...