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Docker container docker container is another core concept. Container is a running instance of image. The difference is that the image is a static read-only file, the container has a writable layer required by the runtime, and the application process in the container is running.Virtual machine is to simulate a whole set of operating system. doc ...

app process creation As you can see in this sketch, Launcher's click on the icon to start the process involves three roles. Launcher is the Initiate Request Process (caller), AMS receives Launcher's request and processes it. If the Activity process to be started does not exist, connect to Zygote through a local socket and initiate a request to ...

Chapter 1 File class 1.1 overview (API) java.io.File class is an abstract representation of path names of files and directories. It is mainly used for creating, finding and deleting files and directories (representing folders). Directory means folder java encapsulates the files and folders (directo ...

Rsyslog Everyone in the company is following the trend of learning es's log scheme. I've been struggling from three years ago to now. Filebeat + kafka + logstash+ es, at that time, I also wanted to build another storm. Later, I found that just a little log volume and a hammer kafka were used. Many of the tools that had been used were damaged by ...

In the previous section, we talked about the network namespace of linux, created the veth, and then made the network of the two network namespaces interoperate. After the docker creates the container, it will be found that the external network can be accessed in the container, and the network between th ...

Azure configuration management series Oracle Linux (PART1) Azure configuration management series Oracle Linux (PART3) 3 install desktop package in Oracle Linux When the Oracle Linux VM starts and runs, connect to it through an SSH session.   Figure 6: Oracle Linux VM started and running To log in to the system, use the same credentials that w ...

Portable file operations - Files Separator In Windows system, backslash '' or slash '/' is used as the separator of the path. However, when using backslash, it needs to be noted that a single backslash represents the escape character, so when using backslash as the separator of the path, it needs ...

In the socket blocking mode, the connect function will not return until there is a clear result (or the connection succeeds or the connection fails). If the server address is "far away" and the connection speed is slow, the connect function may cause the program to block in the connect process ...

Article directory 1, Parameters of main function 2, Standard writing of C program 3, envp parameter 4, Homework after class 5, Copyright notice When the program is running, some need to take parameters, some do not take parameters, such as linux operating system commands, which are essentially C p ...

In robotic technology and automation, the control ring is an endless loop of control system state This is an example of a control ring:'Automatic temperature regulator in a room'When you set the temperature and tell the thermostat your "expected state", the actual temperature of the room is "current state".By switching th ...