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Test if remote TCP port is open from a shell script
...ethod for properly testing if a given TCP port is open on a remote server, from inside a Shell script.
16 Answers
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Bash tool to get nth line from a file
...here's a Bash tool that specifically extracts a line (or a range of lines) from a file.
19 Answers
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How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?
...les of where you see it in the wild? e.g Proxy classes in Web Services. +1 from me.
– Rob Cooper
Dec 8 '08 at 19:06
5
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What is the difference between the mouseover and mouseenter events?
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You can try out the following example from the jQuery doc page. It's a nice little, interactive demo that makes it very clear and you can actually see for yourself.
var i = 0;
$("div.overout")
.mouseover(function() {
i += 1;
$(this).find("span"...
How do I find which rpm package supplies a file I'm looking for?
...NU versions of grep pattern matching utilities.
Repo : base
Matched from:
Filename : /bin/grep
You may prefer the output and speed of the repoquery tool, available in the yum-utils package.
sudo yum install yum-utils
repoquery --whatprovides '*bin/grep'
grep-0:2.5.1-55.el5.x86_64
grep-0...
How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
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I wasn't able to get mine working from the command-line switch but I have been able to do it just by setting my HTTP_PROXY environment variable. (Note that case seems to be important). I have a batch file that has a line like this in it:
SET HTTP_PROXY=http:...
Failed to locate the winutils binary in the hadoop binary path
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Simple Solution:
Download it from here and add to $HADOOP_HOME/bin
(Source)
IMPORTANT UPDATE:
For hadoop-2.6.0 you can download binaries from Titus Barik blog >>.
I have not only needed to point HADOOP_HOME to extracted directory [path], but al...
Rolling median algorithm in C
...plement a rolling median filter (analogous to a rolling mean filter) in C. From my search of the literature, there appear to be two reasonably efficient ways to do it. The first is to sort the initial window of values, then perform a binary search to insert the new value and remove the existing one ...
JavaScript equivalent to printf/String.Format
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From ES6 on you could use template strings:
let soMany = 10;
console.log(`This is ${soMany} times easier!`);
// "This is 10 times easier!
See Kim's answer below for details.
Otherwise:
Try sprintf() for JavaScript.
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How to run a python script from IDLE interactive shell?
How do I run a python script from within the IDLE interactive shell?
15 Answers
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