Analysis of multi platform Java ransomware for education and software industry

essential information Tycoon is a multi platform Java blackmail software for Windows ® and Linux ®, which has been in the field since at least December 2019. It is deployed in the form of Trojan Java runtime environment (JRE) and executed in the form of obscure java image format. It has been o ...

Posted by dutchboy on Wed, 17 Jun 2020 23:55:02 -0700

qt client technology talks - client exception crash handling: dump, corefile 02

1, Foreword It's normal for the client to have bugs, but if bugs cause the program to crash, we must pay attention to them, so in order to better locate the cause of the crash, we need to do some special handling. Because only linux and window platforms have been built, the following list only deals w ...

Posted by Cheez on Wed, 17 Jun 2020 23:49:29 -0700

Enterprise practice (13) details of LVS load balancing NAT mode

What is cluster A group of computers interconnected by a high-speed network and managed in a single system mode. Many servers are put together to provide the same service, which looks like only one server in the client. It can obtain relatively high benefits in performance, reliability and flexibilit ...

Posted by thetick on Tue, 16 Jun 2020 21:18:59 -0700

File IO programming under Linux

Linux system call refers to a set of "special interfaces" provided by the operating system to user programs through which user programs can obtain special services provided by the operating system. To better protect kernel space, programs are divided into kernel space and user space, which ru ...

Posted by locomotive on Tue, 16 Jun 2020 18:34:54 -0700

Python implementation of multiplexing TCP LAN file transmission based on socket

Basic information of LAN transmission 1. What is Io? ⦁ definition ⦁ blocking IO ⦁ non blocking IO 2.IO multiplexing definition select specific usage 3. Realize the file transmission of multiplex LAN server.py client.py FileOperation.py matters needing attention Operation effect 1. What is ...

Posted by steelerman99 on Sat, 13 Jun 2020 21:27:21 -0700

PostgreSQL installation tutorial of girlfriend metropolis

Pure Linux PostgreSQL offline installation tutorial for girlfriend PostgreSQL database installation, based on version 10.5.1, Use *. gz binary compression package to install manually on Linux system. Installation package: postgresql-10.5.1-linux-x64-binaries.tar.gz 1. Create postgres user groupadd p ...

Posted by PHP_PhREEEk on Sat, 13 Jun 2020 20:33:40 -0700

Enterprise Actual LNMP High Performance Server_wordpress, discuz dual site deployment

Enterprise Actual LNMP High Performance Server_wordpress, discuz dual site deployment In LNMP WEB architecture, Nginx is a high performance WEB server and cannot process PHP itself. When receiving HTTP Request requests from client browsers, Nginx server responds to and processes WEB requests. Static resource CSS, pictures, videos, TXT and othe ...

Posted by AAFDesign on Sat, 13 Jun 2020 15:24:55 -0700

Some small exercises of Shell under Linux

Brief answer 1. Count the number of files under / var/log. find /var/log/ ! -type d |wc -l //Or l l - R / var / log / | egrep "^ [SL -] [RWX -] {9}" | WC - L 3. Write a script to judge which ip address is currently online in the 192.168.1.0/24 network, and which ip address can be ping ...

Posted by Moon-Man.net on Fri, 12 Jun 2020 21:16:01 -0700

Linux file system analysis VFS

"Everything is a file", a concept heard just after contacting Linux, embodies the design philosophy of Linux, abstracts all software and hardware resources into files, enables users to operate almost all system resources with the same api, brings great convenience to application development ...

Posted by Valect on Fri, 12 Jun 2020 02:54:06 -0700

Boy! Kubernetes deployment is so simple, you can see it completely

How is it implemented to migrate the project to k8s platform? Make a mirror image Controller management Pod Pod data persistence Exposed applications Publish application to the public Log / monitor 1. There are three steps to making a mirror image The first basic image is based on which operating system, such as Centos7 or other The second ...

Posted by wenquxing on Wed, 10 Jun 2020 19:44:45 -0700