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What is the difference between save and export in Docker?
...is "saved" images chain into another docker instance and create containers from these images.
export will fetch the whole container : like a snapshot of a regular VM. Saves the OS of course, but also any change you made, any data file written during the container life. This one is more like a tradit...
What does multicore assembly language look like?
...thread (usually thread 0 in core 0 in processor 0) starts up fetching code from address 0xfffffff0. All the other threads start up in a special sleep state called Wait-for-SIPI. As part of its initialization, the primary thread sends a special inter-processor-interrupt (IPI) over the APIC called a...
Lost connection to MySQL server at 'reading initial communication packet', system error: 0
...to the loop-back IP (127.0.0.1 / localhost) which effectively cuts you off from connecting from "outside".
If this is the case, you need to upload the script to the webserver (which is probably also running the MySQL server) and keep your server host as 'localhost'
...
implements Closeable or implements AutoCloseable
...y-with-resources, but also allows throwing more general checked exceptions from close().
When in doubt, use AutoCloseable, users of your class will be grateful.
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How to use executables from a package installed locally in node_modules?
...
You don't have to manipulate $PATH anymore!
From npm@5.2.0, npm ships with npx package which lets you run commands from a local node_modules/.bin or from a central cache.
Simply run:
$ npx [options] <command>[@version] [command-arg]...
By default, npx will ch...
How to avoid reverse engineering of an APK file?
...ing a payment processing app for Android, and I want to prevent a hacker from accessing any resources, assets or source code from the APK file.
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Are PHP include paths relative to the file or the calling code?
...tion of A.PHP? That is, does it matter which file the include is called from, or only what the current working directory is- and what determines the current working directory?
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How does SSL really work?
...ing (#2 above).
But what if an adversary could modify packets sent to and from the server, and what if that adversary modified the certificate you were presented with and inserted their own public key or changed any other important details? If that happened, the adversary could intercept and modify...
Store output of subprocess.Popen call in a string
...process.check_output() function to store output of a command in a string:
from subprocess import check_output
out = check_output(["ntpq", "-p"])
In Python 2.4-2.6
Use the communicate method.
import subprocess
p = subprocess.Popen(["ntpq", "-p"], stdout=subprocess.PIPE)
out, err = p.communicate(...
How to get response status code from jQuery.ajax?
...the following code, all I am trying to do is to get the HTTP response code from a jQuery.ajax call. Then, if the code is 301 (Moved Permanently), display the 'Location' response header:
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