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How to create a CPU spike with a bash command
...if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & }; fulload; read; killall dd
Repeat the command in the curly brackets as many times as the number of threads you want to produce (here 4 threads).
Simple enter hit will stop it (just make sure no other dd is running on this user or yo...
Jquery select all elements that have $jquery.data()
...
@gdoron, that's because data()'s getter form does indeed read the HTML5 data- attributes, but its setter form neither creates nor updates them.
– Frédéric Hamidi
Feb 29 '12 at 13:37
...
How to create a zip file in Java
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Java 7 has ZipFileSystem built in, that can be used to create, write and read file from zip file.
Java Doc: ZipFileSystem Provider
Map<String, String> env = new HashMap<>();
// Create the zip file if it doesn't exist
env.put("create", "true");
URI uri = URI.create("jar:file:/codeSam...
What is the meaning of the term “free function” in C++?
While reading the documentation for boost::test, I came across the term "free function". What I understand is that a free function is any function that doesn't return anything (Its return type is void). But after reading further it seems that free functions also don't take any arguments. But I am no...
Facebook access token server-side validation for iPhone app
...app, see the comments, original answer as
follows:
I assume that you already have the access token in hand. In such a case the simplest way to validate an access token is to issue the following request
https://graph.facebook.com/me?fields=id&access_token=@accesstoken
Here replace @accesst...
How to pass an array within a query string?
...e fields or arrays would be:
?cars[]=Saab&cars[]=Audi (Best way- PHP reads this into an array)
?cars=Saab&cars=Audi (Bad way- PHP will only register last value)
?cars=Saab,Audi (Haven't tried this)
Form Examples
On a form, multi-valued fields could take the form of a select box set to m...
Find out whether Chrome console is open
...ill not be able to detect an undocked inspector, or if the inspector was already open on page load. There is also some potential for false positives.
window.onresize = function() {
if ((window.outerHeight - window.innerHeight) > 100) {
alert('Docked inspector was opened');
}
}
...
Enum Naming Convention - Plural
I'm asking this question despite having read similar but not exactly what I want at C# naming convention for enum and matching property
...
bash: shortest way to get n-th column of output
...awk '{print $2}' | xargs rm
using only bash you can use:
svn st | while read a b; do rm "$b"; done
Granted, it's not shorter, but it's a bit more efficient and it handles whitespace in your filenames correctly.
share
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Finding current executable's path without /proc/self/exe
...specific interfaces:
Mac OS X: _NSGetExecutablePath() (man 3 dyld)
Linux: readlink /proc/self/exe
Solaris: getexecname()
FreeBSD: sysctl CTL_KERN KERN_PROC KERN_PROC_PATHNAME -1
FreeBSD if it has procfs: readlink /proc/curproc/file (FreeBSD doesn't have procfs by default)
NetBSD: readlink /proc/cur...