Implementation of point-to-point chat room-c language under RedHat

Implementing point-to-point chat room under RedHat Point to point chat room provides a platform for people to communicate, and it has a high degree of privacy and convenience. By providing a perfect network chat system, we can achieve the purpose of communication and contact between people. developm ...

Posted on Fri, 19 Jun 2020 22:13:07 -0400 by daftdog

Deep understanding of system calls

Experiment content: Find a system call whose system call number is the same as the last two digits of the student number [i.e. system call 97] Trigger the system call through assembly instructions Trace the kernel process of the system call through gdb Focus on the analysis of the save site, recovery site and system call return of the system ...

Posted on Wed, 27 May 2020 09:44:19 -0400 by Birmingham

CentOS7/Red Hat7 NTP service fails to start automatically

Original address: http://blog.csdn.net/babyfish13/article/details/52502522 CentOS 7 is different from the previous linux operation, and the command is different for the adjustment of boot-up. chkconfig --list view the self startup status of non system built-in services [root@master ~]# chkconfig --list      Note: This output shows SysV ...

Posted on Wed, 20 May 2020 11:25:35 -0400 by mightymouse

Harbor private warehouse construction

1, What is harbor?Harbor is an open-source container image storage software. It protects the image through role-based access control, scans the image to find vulnerabilities, and marks the image as trusted. As a CNCF incubation project, harbor provides compliance, performance and interoperability, which can help manage images consistently and ...

Posted on Sun, 26 Apr 2020 18:24:09 -0400 by jshowe

Installing VMware Station 12.5 on Linux CentOS 7.4

An error occurred while installing VMware Station 12.5 on Linux CentOS 7.4. Run the following command: ./VMware-Workstation-Full-12.5.0.x86_64.bundle  It seems that everything is normal. But when you start up, you will be prompted to go to / TMP / VMware root to see a log. Open that log, that's it. 2018-03-09T08:07:27.986-05:00| vthread-4 ...

Posted on Thu, 02 Apr 2020 03:36:57 -0400 by Obadiah

Docker 19+Ubuntu 18.04 Install StepByStep

Part1.Install Ubuntu 18.04 Desktop Virtual Machine Environment: VMWare Workstation 15Virtual Machine Configuration: 1cpu 4 core 8G memory 40G hard disk (immediate space allocation + single file)Virtual Machine Network: NAT Network 1.1 Create Virtual Machine step1. Figure 1-1 Install the system later step2. Select Operating System Figu ...

Posted on Fri, 13 Mar 2020 14:41:04 -0400 by hedgehog90

How to enter rescue mode in case of Linux system failure

In the process of Linux running, sometimes the system can not start because of misoperation. The rescue mode of Linux can solve this kind of fault. In fact, the rescue mode is a micro operating system, which can repair the system ...

Posted on Mon, 24 Feb 2020 01:27:30 -0500 by ddoc

CTF-8 shooting range seizing the flag

It's a God who can win because of the enemy Environmental preparation VMware Workstation Pro12 Kali Linux (IP: 10.10.16.128) CTF-8 virtual machine NAT network connections 1. Host discovery fping -asg 10.10.16.0/24 Visit target http://10.10.16.138 Check the source code and find the flag 2. Por ...

Posted on Sun, 23 Feb 2020 06:16:33 -0500 by prexep

Set LAN between virtual machines in host only mode

In order to better simulate the production server, relevant tests can be carried out in the local virtual machine. Generally, the actual production server can only be the same as the local host or intranet, so it is very important to set fixed IP for virtual machine and select host only mode for testing ...

Posted on Thu, 13 Feb 2020 09:39:31 -0500 by kostik

Open source virtual machine Bochs installation and stepping on the pit

Because you want to write a simple operating system, you need to install a virtual machine to simulate the hardware. VMware is not suitable for this scenario, because you will use hardware level virtualization, and bochs, the open-source virtual machine, uses software to virtualize all the hardware, so debugging can be very fine-grained. For ex ...

Posted on Tue, 11 Feb 2020 04:26:15 -0500 by racer x