su | su for android , replacement for superuser , never ask
kandi X-RAY | su Summary
kandi X-RAY | su Summary
su for android, replacement for superuser, never ask anything.
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QUESTION
I want to use the function path_weight to calculate the su of weights along a path. The weights are decimals. But the documentation for path_weight says it would return an int. The implementation just sums up the weights along the path, and also works for decimals:
...ANSWER
Answered 2022-Mar-18 at 04:52As noted in the comment by @micro5, this can be considered a typo, although the actual reasoning is likely due to the convention of using integers for weights (e.g. a typical example could be that a weight of a link between two nodes is the count of times they exchanged some information).
There is no explicit type-hinting in the source code, so the code will work with both floats and ints. I submitted PR 5398 to update the docs.
QUESTION
To give more context about my problem:
I am using python to build an API connecting to the TWS of interactive brokers. I managed to build something functional and able to fetch live data from contracts using the methods given in the doc of IB. Now that I want to use all the data to build other parallel systems with it, I have encounter problems organising the data that arrives from the IB server.
My program loops a list of 30 symbols to get live data from and then I want to put the data (ex. 'HIGH', 'LOW', 'CLOSE', 'VWAP' etc) from each symbol all together in one dataframe to calculate indicators and from there come up with an alert system that is based on them indicators.
This objective I have already accomplished it using only one symbol for the whole program. Is easy to store the data in instances or variables, pass it to a DataFrame and then calculate to set up alerts.
Now when looping a list of 30 values and receiving the data of all of them I have struggled trying to store the data for each symbol together and then calculate and set up alerts. Specially when I have to use several methods to receive the data (ex. I use tickPrice for some data and tickString for some other data) this several methods execute themselves one after the other but they wont necessarily have all the data at the same time, some values take more time than others to show.
I will show an example of my code to give even more context of my objective:
This is my EWrapper class:
...ANSWER
Answered 2022-Feb-26 at 12:14It's easy to create a Pandas dataframe from a Python dictionary that contains lists. For example, the following code creates a dictionary containing ticker symbols, bid prices, and ask prices:
QUESTION
Currently, my form looks as I want it to on the desktop. Example below
However, when condensed down on mobile, the form fields appear way too tight together
How can I have better control over how the form fields appear (width) on mobile. Would this also be media queries, or is there something wrong in my code that is causing the form fields width to become too tight when on mobile?
...ANSWER
Answered 2022-Feb-24 at 04:56You can set a min-width
on your
Flex will shrink all the way down with the browser, and min-width
allows it still to shrink, but stop shrinking at a desired width.
QUESTION
I am trying to build a weather app with open weather API. There is a problem with the first call I have to get the value latitude and longitude from the first API to make a second API call. I have tried async / await but can't get the correct structure this code to work I also tried useEffect hook but failed again.
My code is below. What am I missing?
...ANSWER
Answered 2022-Feb-18 at 17:09What you are missing is that when you are calling searchFollowing()
, React did not yet re-render, therefore location
wouldn't be get updated. A way to do it is this :
QUESTION
I setup a new project inside an alpine image (node:16-alpine
), in /app2
, with the following structure:
ANSWER
Answered 2022-Jan-26 at 18:38This happens in @npmcli/promise-spawn
QUESTION
I'm trying to optimise numpy.packbits
:
ANSWER
Answered 2022-Jan-15 at 03:29There are several issue with the Numba implementation. One of them is that parallel loops breaks the constant propagation optimization in LLVM-Lite (the JIT-compiler used by Numba). This cause critical information like array strides not to be propagated resulting in a slow scalar implementation instead of an SIMD one, and additional unneded instructions so to compute the offsets. Such issue can also be seen in C code. Numpy added specific macros so help compilers to automatically vectorize the code (ie. use SIMD instructions) when the stride of the working dimension is actually 1.
A solution to overcome the constant propagation issue is to call another Numba function. This function must not be inlined. The signature should be manually provided so the compiler can know the stride of the array is 1 at compilation time and generate a faster code. Finally, the function should work on fixed-size chunks because function calls are expensive and the compiler can vectorize the code. Unrolling the loop with shifts also produce a faster code (although it is uglier). Here is an example:
QUESTION
I'm trying out Github codespaces, specifically the "Node.js & Mongo DB" default settings.
The port is forwarded, and my objective is to connect with MongoDB Compass running on my local machine.
The address forwarded to 27017
is something like https://.githubpreview.dev/
I attempted to use the following connection string, but it did not work in MongoDB compass. It failed with No addresses found at host
. I'm actually unsure about how I even determine if MongoDB is actually running in the Github codespace?
ANSWER
Answered 2022-Jan-09 at 23:27As @iravinandan said you need to set up a tunnel.
Publishing a port alone won't help as all incoming requests are going through an http proxy.
If you dig CNAME .githubpreview.dev
you will see it's github-codespaces.app.online.visualstudio.com. You can put anything in the githubpreview.dev subdomain and it will still be resolved on the DNS level.
The proxy relies on HTTP Host header to route the request to correct upstream so it will work for HTTP protocols only.
To use any other protocol (MongoDb wire protocol in your case) you need to set up a TCP tunnel from codespaces to your machine.
Simplest set up - direct connectionAt the time of writing the default Node + Mongo codespace uses Debian buster, so ssh port forwarding would be the obvious choice. In the codespace/VSCode terminal:
QUESTION
TL;DR How does for example su or sudo work with no PAM?
Hello,
I want to play around with suid and stuff, I already got the SUID part and the SUID bit and stuff, but the problem is that it's not asking me for a password and as I want it to ask a password and find su and sudo quite mangled in source I am very confused.
I looked into setsuid() and getuid() documentation and it doesn't seem like there is anything about password authentication.
How would one achieve password authentication with no PAM, I use sudo with no pam and it works fine, su with pam, both work fine, I am confused how I'd make it work
This C++ code is what I have right now:
...ANSWER
Answered 2022-Jan-07 at 03:05First, the basics: each process has a userid and a groupid (I am going to ignore supplemental attributes like additional groupids).
Userid 0 is root. That's it, end of story.
When you have a process whose userid is 0, it's a root process. End of story.
How a process acquires its userid 0 is immaterial. If a process's userid is 0, it is a root process, and that's it.
When you go through the motions of setting up a setuid process, that setuid(0)
s itself, you're done. You're a root process. That's it. There's nothing more to say about it.
setsuid() and getuid() documentation and it doesn't seem like there is anything about password authentication.
Correct. All they do is adjust/update the userid. That's it. There's nothing more to it.
The su
and sudo
processes do the following:
- They are setuid executables.
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
select
code,
max(age) age_level,
max(age_interval) age_interval,
sum(total) total
from
(select
(case
when floor(months_between(sysdate, u.birth_date)/12) between 13 and 18 then 'Өсвөр үе'
when floor(months_between(sysdate, u.birth_date)/12) between 19 and 25 then 'Залуу үе'
when floor(months_between(sysdate, u.birth_date)/12) between 26 and 35 then 'Идэр үе'
when floor(months_between(sysdate, u.birth_date)/12) between 36 and 45 then 'Хижээл үе'
when floor(months_between(sysdate, u.birth_date)/12) between 46 and 60 then 'Өтөл үе'
when floor(months_between(sysdate, u.birth_date)/12) between 60 and 100 then 'Өндөр үе'
else 'other'
end) age,
(case
when floor(months_between(sysdate, u.birth_date)/12) between 13 and 18 then 'kid'
when floor(months_between(sysdate, u.birth_date)/12) between 19 and 25 then 'bigger_kid'
when floor(months_between(sysdate, u.birth_date)/12) between 26 and 35 then 'adult'
when floor(months_between(sysdate, u.birth_date)/12) between 36 and 45 then 'bigger_adult'
when floor(months_between(sysdate, u.birth_date)/12) between 46 and 60 then 'big_adult'
when floor(months_between(sysdate, u.birth_date)/12) between 60 and 100 then 'caption'
else 'other'
end) code,
(case
when floor(months_between(sysdate, u.birth_date)/12) between 13 and 18 then '13-18'
when floor(months_between(sysdate, u.birth_date)/12) between 19 and 25 then '19-25'
when floor(months_between(sysdate, u.birth_date)/12) between 26 and 35 then '26-35'
when floor(months_between(sysdate, u.birth_date)/12) between 36 and 45 then '36-45'
when floor(months_between(sysdate, u.birth_date)/12) between 46 and 60 then '46-60'
when floor(months_between(sysdate, u.birth_date)/12) between 60 and 100 then '60-100'
else 'other'
end) age_interval,
count(u.id) total
from sec_survey_users su
left join sec_users u on su.user_id = u.id
where su.survey_id = 'D3A21B1C2D8334C9E055824F7FFC5DF4' group by u.birth_date) mtable group by mtable.code;
...ANSWER
Answered 2021-Dec-25 at 11:28You can rewrite the query by using CTE in order to prevent repeatedly writing
FLOOR(MONTHS_BETWEEN(sysdate, u.birth_date) / 12)
which and age aliased form of it will be used within the GROUP BY lists such as
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