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How to install the JDK on Ubuntu Linux
...mple this is how to install JDK 1.7.0_13;
Download the JDK from Oracle's site. The download to the newest version is always linked from http://java.oracle.com.
As root, do;
cd /usr/local
tar xzf <the file you just downloaded>
As your normal user, add or change these two lines in your ~/...
How do you create a toggle button?
....ready() (or some object literals init() function if your building an ajax site..) drop some JQuery like so:
$("#myToggleButton").button()
thats it. (don't forget the < label for=...> because JQueryUI uses that for the body of the toggle button..)
From there you just work with it like any ...
Where am I? - Get country
...e information as json. From this json you can get the country easily. This site works using your current IP,it automatically detects the IP and sendback details.
Docs http://ip-api.com/docs/api:json Hope it helps.
Example json
{
"status": "success",
"country": "United States",
"countryCode...
jQuery event to trigger action when a div is made visible
I'm using jQuery in my site and I would like to trigger certain actions when a certain div is made visible.
22 Answers
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Modify alpha opacity of LESS variable
...
The site documentation gives the answer:
background: fade(@blue, 20%);
The function name is fade not alpha according to that document.
share
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Converting RGB to grayscale/intensity
...on color in general:
Wikipedia Luma
Bruce Lindbloom 's outstanding web site
chapter 4 on Color in the book by Colin Ware, "Information Visualization", isbn 1-55860-819-2;
this long link to Ware in books.google.com
may or may not work
cambridgeincolor :
excellent, well-written
"tutorials on how...
How do I syntax check a Bash script without running it?
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Time changes everything. Here is a web site which provide online syntax checking for shell script.
I found it is very powerful detecting common errors.
About ShellCheck
ShellCheck is a static analysis and linting tool for sh/bash scripts. It's mainly focused ...
How to set environment variable for everyone under my linux system?
...variables. The best you can do is arrange for any specific shell to have a site-specific initialization.
If you put it in /etc/profile, that will take care of things for most posix-compatible shell users. This is probably "good enough" for non-critical purposes.
But anyone with a csh or tcsh shell...
Markdown and image alignment
I am making a site that publishes articles in issues each month. It is straightforward, and I think using a Markdown editor (like the WMD one here in Stack Overflow) would be perfect.
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How can I solve a connection pool problem between ASP.NET and SQL Server?
The last few days we see this error message in our website too much:
22 Answers
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