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Using relative URL in CSS file, what location is it relative to?
When defining something like a background image URL in a CSS file, when using a relative URL, where is it relative to? For example:
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Which terminal command to get just IP address and nothing else?
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You can write a script that only return the IP like:
/sbin/ifconfig eth0 | grep 'inet addr' | cut -d: -f2 | awk '{print $1}'
For MAC:
ifconfig | grep "inet " | grep -v 127.0.0.1 | cut -d\ -f2
Or for linux system
hostname -i | awk '{print $3}' # Ubuntu
hostname -i ...
Bitwise operation and usage
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Bitwise operators are operators that work on multi-bit values, but conceptually one bit at a time.
AND is 1 only if both of its inputs are 1, otherwise it's 0.
OR is 1 if one or both of its inputs are 1, otherwise it's 0.
XOR is 1 only if exactly one of its input...
How to use ssh agent forwarding with “vagrant ssh”?
Rather than create a new SSH key pair on a vagrant box, I would like to re-use the key pair I have on my host machine, using agent forwarding . I've tried setting config.ssh.forward_agent to TRUE in the Vagrantfile, then rebooted the VM, and tried using:
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What are the differences between a HashMap and a Hashtable in Java?
...table in Java:
Hashtable is synchronized, whereas HashMap is not. This makes HashMap better for non-threaded applications, as unsynchronized Objects typically perform better than synchronized ones.
Hashtable does not allow null keys or values. HashMap allows one null key and any number of null va...
Capitalize the first letter of both words in a two word string
...e final count
"Zip Code" "State" "Final Count"
Edit This works for any string, regardless of word count:
simpleCap("I like pizza a lot")
[1] "I Like Pizza A Lot"
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Bash script to set up a temporary SSH tunnel
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You can do this cleanly with an ssh 'control socket'. To talk to an already-running SSH process and get it's pid, kill it etc. Use the 'control socket' (-M for master and -S for socket) as follows:
$ ssh -M -S my-ctrl-socket -fnNT -L 50000:localhost:3306 jm@sampledomain....
Location Manager Error : (KCLErrorDomain error 0)
...ccurs if you have Scheme/Edit Scheme/Options/Allow Location Simulation checked but don't have a default location set. I'm sure there are other causes as well though.
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How do I dynamically assign properties to an object in TypeScript?
...gramatically assign a property to an object in Javascript, I would do it like this:
23 Answers
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Random shuffling of an array
...sing Collections to shuffle an array of primitive types is a bit of an overkill...
It is simple enough to implement the function yourself, using for example the Fisher–Yates shuffle:
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
class Test
{
public static void main(String...