## Can I use the `base / pgsql_tmp` directory for non-administrator applications?

I need to export / import JSON files, CSV files, XML, GeoJSON, etc. Example:

``````CREATE EXTENSION adminpack;
SELECT pg_catalog.pg_file_write('base/pgsql_tmp/test1_hello.txt', 'Hello World!', false);
``````

They are all temporary (it exists in a START / COMMITMENT), but no problem?

• no file name conflict? (Can I create a subdirectory to avoid it?)

• no risk of volume overflow?

Maybe it's better to create a `\${data_directory}/base/pgsql_tmp/MyArea` as a symbolic link to another area (eg. `/tmp/MyRealArea`)?

## NOTES AND CONTEXT

Sometimes we can say that "database servers are not designed for general file I / O" (ref), but sometimes we need it (!), To simplify and automate interface or ETL procedures.

## nt.number theory – Applications of the eta function of Atiyah-Patodi-Singer \$ eta (s) \$

Atiya, Patodi, and Singer used the eta function of a differential operator to derive their famous index theorem, and it is given by

$$eta (s) = sum _ { lambda neq 0} ( mathrm {sign} lambda) | lambda | – s$$

where the sum goes over the operator's non-zero eigenvalues. The limit $$lim_ {s a 0} eta (0)$$ it is the variant eta that appears in the index theorem itself.

My question is: are there known applications for the eta function evaluated at other values ​​of $$s$$ ?

## Security: What causes the delay when using applications in Windows Server 2016?

In our organization, we are using a Windows Server 2016 Datacenter as Azure VM. The server works fine but currently we face the following problems:

• Each time applications on that server initially try to open a network connection (for example, to obtain a license from a license server) it takes around 20 seconds until the connection is established.
• Each time applications on that server initially try to modify the contents of a database, it takes around 20 seconds until those changes have been written to the database.
• Since the delay is so long, it often causes our tools to crash.
• Also, it takes a long time for the installers to run after double-clicking on them.

At this time, the status is as follows:

• Ordinary applications (Word, Excel, etc.) that do not open network or database connections work without delay
• According to the machine settings, Antivirus, Windows Firewall and Windows Defender should be disabled (but I'm not sure if they really don't interfere in any way …)

We wondered if Microsoft Windows Security Audit (Windows Filtering Platform) could cause this problem.

Any suggestion would be highly appreciated.

## Applications: Android for PC does not stream videos in applications

I have installed Android for PC from android-x86.org. It is working fine, but the videos are not streaming. YouTube works fine when opened in Chrome, but no app is streaming the videos.

Native Android libraries are also downloaded via settings. Can I create a custom Android app to fix the problem too, but not sure where to start?

The operating system is connected to VirtWiFi and LAN and even the youtube ads also work in the youtube app but only in audio, not video. Is there a different network path for Chrome and for apps? Android version is Pie

## linux – How to use CNAME to load web applications

I have created an application and plan to host it at example.com
I have around 10 clients who want the app to be hosted on their brand (white label).
Instead of deploying the same app 10 times, I'd rather host the app at example.com and point the CNAME of each of the client's domains to example.com

I implemented the same, but for some reason that doesn't work as expected.

My current settings:

``````customer1.tld.          60      IN      CNAME   prod.example.com.
prod.example.com.       59      IN      A       62.xx.xxx.204
``````

When hot prod.example.com in a browser it works fine, however when I go into customer1.tld it doesn't work. Logic: the client dns (CNAME) must point to my host name and my host name (record A) must point to the IP of my server.
Something that I missed?

Other related information I'm using:

• VestaCP
• Ubuntu 16.04
• Apache / 2.4.29

## applications – How can I get the IP address and port of an emulator detected by the `adb` server using` adb`?

How can I get the IP address and port of an emulator detected by `adb` server using `adb`?

`adb` has detected my Android emulator, `emulator-5554`, and I can get your IP address and port using `lsof`, since there is only one emulator running.

How can I get `adb` show IP addresses and ports for detected emulators?

Example:

`adb devices -l`:

``````emulator-5554          device product:sdk_gphone_x86_arm model:AOSP_on_IA_Emulator device:generic_x86_arm transport_id:2
``````

`lsof -i4TCP`:

``````adb       10981 nlykkei    9u  IPv4 0xb75adee8092187c5      0t0  TCP 127.0.0.1:5037 (LISTEN)
qemu-syst 10997 nlykkei   43u  IPv4 0xb75adee808ae3a25      0t0  TCP 127.0.0.1:5555 (LISTEN)
``````

https://developer.android.com/studio/command-line/adb

## applications: application to block other applications and system settings

I am looking for an application that

• It blocks any other application you select (by blocking I mean avoiding changing any settings of those applications, or even opening them), including system settings (so that for example system time cannot be changed or other applications cannot can be changed) installed)
• it is protected by PIN or password, where the PIN or password can be arbitrarily long.

Can you tell me if there is such an application? I have a non-rooted phone running Android 9.

## Applications – How do I rename an application in MacOS correctly?

I tested it using Finder, navigating to Applications, right-clicking the application to rename it, moving to "information" and renaming it there.

What it has essentially done here is to rename the application package. An application package is a special type of folder on macOS that contains the application executable and the associated file. This does not Really change the application name, only the container that is abstracted to Look like the app

This works in most places where the app name appears, but if I have the app open in full screen and swipe up with 3 fingers, I still see the old app name in the menu at the top of the screen.

Technically you can't rename the name of the application, as it is something that is connected when the application is created by its developer. The name you see at the top is the application menu bar, and not usually It is possible to change the name displayed by the users of the application (only the developer can change it when they compile the application).