au | use au | Continuous Backup library
kandi X-RAY | au Summary
kandi X-RAY | au Summary
You can use au to backup you installation files in Termux, i.e. debs. If you find your system unstable after updating, you can try to use dpkg --purge pkg_name and then dpkg --install pkg_name from /sdcard/debs to downgrade packages to a previous version of a package in the hope of regaining system stability in Termux.
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QUESTION
I was simulating the solar system (Sun, Earth and Moon). When I first started working on the project, I used the base units: meters for distance, seconds for time, and metres per second for velocity. Because I was dealing with the solar system, the numbers were pretty big, for example the distance between the Earth and Sun is 150·10⁹ m.
When I numerically integrated the system with scipy.solve_ivp, the results were completely wrong. Here is an example of Earth and Moon trajectories.
But then I got a suggestion from a friend that I should use standardised units: astronomical unit (AU) for distance and years for time. And the simulation started working flawlessly!
My question is: Why is this a generally valid advice for problems such as mine? (Mind that this is not about my specific problem which was already solved, but rather why the solution worked.)
...ANSWER
Answered 2021-Jul-25 at 07:42Most, if not all integration modules work best out of the box if:
- your dynamical variables have the same order of magnitude;
- that order of magnitude is 1;
- the smallest time scale of your dynamics also has the order of magnitude 1.
This typically fails for astronomical simulations where the orders of magnitude vary and values as well as time scales are often large in typical units.
The reason for the above behaviour of integrators is that they use step-size adaption, i.e., the integration step is adjusted to keep the estimated error at a defined level. The step-size adaption in turn is governed by a lot of parameters like absolute tolerance, relative tolerance, minimum time step, etc. You can usually tweak these parameters, but if you don’t, there need to be some default values and these default values are chosen with the above setup in mind.
DigressionYou might ask yourself: Can these parameters not be chosen more dynamically? As a developer and maintainer of an integration module, I would roughly expect that introducing such automatisms has the following consequences:
- About twenty in a thousand users will not run into problems like yours.
- About fifty a thousand users (including the above) miss an opportunity to learn rudimentary knowledge about how integrators work and reading documentations.
- About one in thousand users will run into a horrible problem with the automatisms that is much more difficult to solve than the above.
- I need to introduce new parameters governing the automatisms that are even harder to grasp for the average user.
- I spend a lot of time in devising and implementing the automatisms.
QUESTION
I am currently pentesting an Android app. I decompiled the app without any issues and whenever I try to recompile it back, the apktool.jar throw Unbound Prefix Error from the locale_config.xml file. Checked the syntax and they're all okay. I don't have any clue on what's going on.
ANSWER
Answered 2022-Mar-17 at 17:14For pentesting purposes, you might want to just get rid of localeConfig.
To do this with minimal changes:
- Comment out all the
lines inlocales_config.xml. - Remove
android:localeConfig="@xml/locales_config"attribute of thetag inAndroidManifest.xml.
That should do it.
QUESTION
I'm using docker-compose to launch a commandbox lucee container and a mysql contianer.
I'd like to change the web root of the lucee server, to keep all my non-public files hidden (server.json etc, cfmigrations resources folder)
I've followed the docs and updated my server.json
https://commandbox.ortusbooks.com/embedded-server/server.json/packaging-your-server
ANSWER
Answered 2022-Feb-24 at 15:19You're using a pre-warmed image
QUESTION
I have this regex:
...ANSWER
Answered 2022-Feb-21 at 17:07Built-in character classes are more table-driven.
Given that, Negative built-in ones like \W, \S etc...
are difficult for engines to merge into a positive character class.
In this case, there are some obvious bugs because as you've said, it doesn't time out on
some target strings.
In fact, [a-xzA-XZ\W] works given the sample string. It times out when Y is included anywhere
but just for that particular string.
Let's see if we can determine if this is a bug or not.
First, some tests:
Test - Fail [a-zA-Z\W]
QUESTION
I know there is a few questions on SO regarding the conversion of JSON file to a pandas df but nothing is working. Specifically, the JSON requests the current days information. I'm trying to return the tabular structure that corresponds with Data but I'm only getting the first dict object.
I'll list the current attempts and the resulting outputs below.
...ANSWER
Answered 2022-Jan-20 at 03:23record_path is the path to the record, so you should specify the full path
QUESTION
[Editing this question completely] Thank you , for those who helped in building the Periodic Table successfully . As I completed it , I tried to link it with another of my project E-Search , which acts like Google and fetches answers , except that it will fetch me the data of the Periodic Table .
But , I got a problem - not with the searching but with the layout . I'm trying to layout the x-scrollbar in my canvas which will display results regarding the search . However , it is not properly done . Can anyone please help ?
Below here is my code :
...ANSWER
Answered 2021-Dec-29 at 20:33I rewrote your code with some better ways to create table. My idea was to pick out the buttons that fell onto a range of type and then loop through those buttons and change its color to those type.
QUESTION
I have been learning buffer overflows and i am trying to execute the following command through shellcode /bin/nc -e /bin/sh -nvlp 4455. Here is my assembly code:
ANSWER
Answered 2021-Dec-29 at 14:12As you can see in strace, the execve command executes as:
execve("/bin//nc", ["/bin//nc", "/bin//nc-e //bin/bash -nvlp 4455"], NULL) = 0
It seems to be taking the whole /bin//nc-e //bin/bash -nvlp 4455 as a single argument and thus thinks it's a hostname. In order to get around that, the three argv[] needed for execve() is pushed seperately.
argv[]=["/bin/nc", "-e/bin/bash", "-nvlp4455"]
These arguments are each pushed into edx, ecx, and ebx. since ebx needs to be /bin/nc, which was already done in the original code. we just needed to push 2nd and 3rd argv[] into ecx and edx and push it into stack. After that we just copy the whole stack into ecx, and then xor edx,edx to set edx as NULL.
Here is the correct solution:
QUESTION
I am currently trying to crawl headlines of the news articles from https://7news.com.au/news/coronavirus-sa.
After I found all headlines are under h2 classes, I wrote following code:
...ANSWER
Answered 2021-Dec-20 at 08:56Your selection is just too general, cause it is selecting all
.decompose() to fix the issue.
How to fix?
Select the headlines mor specific:
QUESTION
I am figuring out how to implement consumer driven contract testing using pact junit5. But the test keeps failing because of no parameter resolver for the injected MockServer, even though the test class is extended with PactConsumerTestExt. My understanding is the parameter resolver for MockServer should be provided with PactConsumerTestExt extension. Would be great if anyone could help me out here!!
Java version : 11
Spring boot version : 2.6.1
Pact library used :
...ANSWER
Answered 2021-Dec-16 at 20:34The version of @PactTestFor method still needs to use version 3.
QUESTION
I have created a widget that retrieves the Current User details of the current ZOHO CRM logged in person.
I have a button that takes the Email of the Current User and filters a database based on the retrieved Email.
I currently have this working by clicking on a button, however I am trying to have this function trigger when the page is loaded.
...ANSWER
Answered 2021-Sep-14 at 16:21Move the contents of the click function to the on PageLoad callback
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