create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
Node.js core does its best to treat every platform equally. Even if most Node developers use OS X day to day, some use Windows, and most everyone deploys to Linux or Solaris. So it's important to keep your code portable between platforms, whether you're writing a library or an application.
Predictably, most cross-platform issues come from Windows. Things just work differently there! But if you're careful, and follow some simple best practices, your code can run just as well on Windows systems.
On Windows, paths are constructed with backslashes instead of forward slashes. So if you do your directory manipulation
function go() { | |
var userId = prompt('Username?', 'Guest'); | |
checkIfUserExists(userId); | |
} | |
var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users'; | |
function userExistsCallback(userId, exists) { | |
if (exists) { | |
alert('user ' + userId + ' exists!'); |
function getParent(snapshot) { | |
// You can get the reference (A Firebase object) from a snapshot | |
// using .ref(). | |
var ref = snapshot.ref(); | |
// Now simply find the parent and return the name. | |
return ref.parent().name(); | |
} | |
var testRef = new Firebase("https://example.firebaseIO-demo.com/foo/bar"); | |
testRef.once("value", function(snapshot) { |
#Node - Running in Production
This gist is based on the excellent post by @hacksparrow which is found at http://www.hacksparrow.com/running-express-js-in-production-mode.html. The main principle is that you want the application to detect that it is running on a production server and to use the production configuration. The way to do this is to set the NODE_ENV=production
. To do this you need to do the following:
$ export NODE_ENV=production
But we have a little problem here. The NODE_ENV environment variable will be lost if the server restarts, so it is safer to put it in the .bash_profile file. That way the variable will set again every time the system reboots. You will find the file in your home directory. It's a hidden file, so you can't see it unless you do a ls -la. We will append the export command to the .bash_profile file.
People
![]() :bowtie: |
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😆 :laughing: |
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😃 :smiley: |
:relaxed: |
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😍 :heart_eyes: |
😘 :kissing_heart: |
😚 :kissing_closed_eyes: |
😳 :flushed: |
😌 :relieved: |
😆 :satisfied: |
😁 :grin: |
😉 :wink: |
😜 :stuck_out_tongue_winking_eye: |
😝 :stuck_out_tongue_closed_eyes: |
😀 :grinning: |
😗 :kissing: |
😙 :kissing_smiling_eyes: |
😛 :stuck_out_tongue: |
# install sysbench | |
$ apt-get install sysbench | |
# CPU benchmark, 1 thread | |
$ sysbench --test=cpu --cpu-max-prime=20000 run | |
# CPU benchmark, 64 threads | |
$ sysbench --test=cpu --cpu-max-prime=20000 --num-threads=64 run | |
# Disk benchmark, random read. See .fio files in this gist |
--log_gc (Log heap samples on garbage collection for the hp2ps tool.) | |
type: bool default: false | |
--expose_gc (expose gc extension) | |
type: bool default: false | |
--max_new_space_size (max size of the new generation (in kBytes)) | |
type: int default: 0 | |
--max_old_space_size (max size of the old generation (in Mbytes)) | |
type: int default: 0 | |
--max_executable_size (max size of executable memory (in Mbytes)) | |
type: int default: 0 |
When hosting our web applications, we often have one public IP
address (i.e., an IP address visible to the outside world)
using which we want to host multiple web apps. For example, one
may wants to host three different web apps respectively for
example1.com
, example2.com
, and example1.com/images
on
the same machine using a single IP address.
How can we do that? Well, the good news is Internet browsers