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How to check if a process id (PID) exists
...ess, use
kill -0 $pid
But just as @unwind said, if you're going to kill it anyway, just
kill $pid
or you will have a race condition.
If you want to ignore the text output of kill and do something based on the exit code, you can
if ! kill $pid > /dev/null 2>&1; then
echo "Could ...
How can I make a div stick to the top of the screen once it's been scrolled to?
I would like to create a div, that is situated beneath a block of content but that once the page has been scrolled enough to contact its top boundary, becomes fixed in place and scrolls with the page.
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What is the difference between JavaScript and ECMAScript?
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edited Jun 30 '13 at 3:21
Cole Johnson
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Accessing constructor of an anonymous class
...I have a concrete class Class1 and I am creating an anonymous class out of it.
10 Answers
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Unicode equivalents for \w and \b in Java regular expressions?
...mentations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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android studio 0.4.2: Gradle project sync failed error
...error when opening a project:
'Gradle project sync failed. Basic functionality (e.g. editing, debugging) will not work proprerly'
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How can I use pointers in Java?
...Java doesn't have pointers, but I heard that Java programs can be created with pointers and that this can be done by the few who are experts in java. Is it true?
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Load and execution sequence of a web page?
...execution sequence of an ordinary web page. But now I need to know detail. It's hard to find answers from Google or SO, so I created this question.
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Convert string to variable name in JavaScript
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If it's a global variable then window[variableName]
or in your case window["onlyVideo"] should do the trick.
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Execute the setInterval function without delay the first time
It's there a way to configure the setInterval method of javascript to execute the method immediately and then executes with the timer
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