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I. description of preconditions 1.1 overview of installation preparation Red Hat OpenShift container platform is composed of Red Hat as RPM package and container image. The RPM package is downloaded from the standard Red Hat repository (Yum repository) using the subscription manager, and the container image is from the Red Hat private reposit ...

** 0. Preface ** Some time ago, I participated in a competition and needed to complete the voice positioning function of ROS robot, but for various reasons, I failed to complete this function. Now I will sort out the overall idea as follows. ** 1. Hardware introduction **First of all, the purpose of ...

1. Thread concept 1.1 comparison between threads and processes Threads are similar to processes, both of which have PCB s The underlying functions of both are the same, and both use clone Processes can become threads Under Linux, thread is the smallest unit of execution; process is the smallest uni ...

reference resources http://cn.linux.vbird.org/linux_server/0330nfs.php#What_NFS_0 Introduction to NFS introduce NFS is network Short for file system, the main function is to let different machines and different operating systems share the specified resource files with each other through the network. It can be simply considered as a ...

1. Count the number of files under / var/log. //find /var/log -type f | wc -l; 2. How to output the running result of F1.txt file to F2.txt? // ./F1 > F2.txt shF1 > F2.txt; 3. Write a script to judge which ip addresses are currently online in the 192.168.1.0/24 network, and ping the gen ...

Signal 2 of IPC mode under Linux 3. Signal set operation function 3.1 signal set setting 3.2 sigprocask function 3.3 sigpending function 3.4 put the pending signal set of all conventional signals on the screen 4. Signal capture (important) 4.1 signal function 4.2 sigaction function 4.3 signal capt ...

selenium initialization Note that if Chrome is not installed in the default path, you need to use the option.binary_location sets the path of chrome. If the chrome driver is not in the same path as the current code, you also need to set the path of the chrome driver. option = webdriver.ChromeOptions() ...

preparation in advance Offline package download: https://github.com/goharbor/h... Select 572MB tgz Hearing that 1.7.6 seems to have a bug, for insurance reasons, I choose 1.8.5 Note minimum installation requirements Installation steps Install docker, configure the source below, and install a specific version of docker (reference documentati ...

Use Linux commands to view data about the current system status and health. However, a single Linux command and application can only obtain one aspect of system data. We need to use the Python module to feed these details back to the administrator and generate a useful system report at the same time. ...

Container and image container Common container States running stopped paused created deleted Note: to view the commands used for docker status: docker ps: container for viewing running status docker ps -a: View containers in all States docker ps -qa: view all container ID S docker stop $(docker ps -qa): stop all containers docker rm $(docke ...