Programmer Group

The winter vacation in 2020 is true, brother I silently brush the tutorial of security cattle at home, and the latest brush is the chapter of "wireless attack". Although Kali virtual machine is installed on the school machine, there is no Usb wireless network card. So I tried it with MacBook. ...

How do I find the number of cores available for an application from Java code? #1 building On Windows where Cygwin is installed, you can use: System.getenv("NUMBER_OF_PROCESSORS") #2 building If you want to get the number of physical cores, run the cmd and terminal commands, and then parse the output to get the required informatio ...

I've been trying to figure out how to rotate video using FFmpeg. I'm using iPhone Video in portrait mode. I know how to use it MediaInfo (great library, by the way) determine the current rotation angle, but now I'm stuck with FFmpeg. According to my reading, you need to use the vfilter option. From what I see, it should look like this: ff ...

For audio and video development, we often need to simulate the weak network environment and observe the performance of APP under the weak network, such as packet loss, delay, jitter, bandwidth restriction, etc. Mac system has a weak network tool APP, called Network Link Conditioner, which supports the visualization of the simulation and config ...

Following the last chapter 2018 swoole 6-asynchronous redis This presentation swoole process management module Create child process New process.php <?php $process = new swoole_process(function(swoole_process $pro) { echo 'swoole Create process' . PHP_EOL; }, false); // If set to true, the terminal will not display standard o ...

Notes on iOS reverse learning: LLDB dynamic debugging target program Configure debugserver 1. Copy the debugserver in the mobile phone to the Mac (provided that the mobile phone has been used as a test machine) scp root@192.168.0.15:/Developer/usr/bin/debugserver /Users/mac/Desktop/dump 2. Check the debugserver architec ...

Reproduced from: https://blog.csdn.net/caoxiaohong1005/article/details/72571798 1. select into outfield function: Export data to the specified directory of pc. 2. Syntax: SELECT ... INTO OUTFILE 'file_name' [CHARACTER SET charset_name] [export_options] export_options: [{FIELDS | COLUMNS} [T ...

Reproduced from: https://blog.csdn.net/caoxiaohong1005/article/details/72571798 1. select into outfield function: Export data to the specified directory of pc. 2. Syntax: SELECT ... INTO OUTFILE 'file_name' [CHARACTER SET charset_name] [export_options] export_options: [{FIELDS | COLUMNS} [T ...

Preface One of the most common ways in anti crawler is to determine the frequency of your requests. If you send a large number of requests in a short period of time, whether you are a person or not, first seal your account or IP for a period of time. At this time, in order to achieve the goal of their ...

I have a problem recently. That is, Mac OS can't read and write when it is plugged into NTFS format mobile hard disk, and then it finds that some file system prompts are occupied by Mac OS and can't be opened. Every time I need to execute the command to mount it manually... Then I can't accept the lazy cancer, so I developed a small tool with ...