Learn Bash skills in the game
Whether you're a newbie or a veteran, there are always fun ways to test your BASH skills. In this tutorial, I'll explain how to test your BASH skills by playing a command line game. In fact, technically speaking, these are not real games like SuperTuxKart, Need for Speed or Counter-Strike. These are just gamified versions of Linux command training courses. You will need to complete a mission based on certain instructions from the game itself. Now, let’s take a look at a few games that can help you learn and practice Linux commands in real time. These games are not just time-killers or mind-blowing, these games will help you get a real experience with terminal commands. Read on: Test your BASH skills with ‘Wargames’ Here’s
Jun 29, 2024 am 02:15 AM
A brief analysis of the installation of Opencv 2.4.13 version under Linux
1. Download and then unzip and install the compressed package unzipopencv-2.4.13.zip2. Enter the folder you just decompressed and create the release folder cdopencv-2.4.13mkdirrelease3. Install the necessary dependency libraries sudoapt-getinstallbuild-essentialcmakelibgtk2.0-devpkg-configpython -devpython-numpylibavcodec-devlibavformat-devlibswscale-dev4. Enter the release folder and compile Ope with cmake
Jun 28, 2024 pm 04:17 PM
In-depth analysis of the kernel source tree: the synergy between Kconfig files and Makefiles
Principle Each directory in the kernel source tree also contains a Kconfig file, which is used to describe the kernel configuration menu related to the source code in the directory. The Kconfig files in each directory constitute a distributed kernel configuration database. When configuring the kernel through the makemenuconfig command, the menu storage technology principle analysis is read from the Kconfig file: Based on the linux26 kernel source code, the configuration is saved to a kernel configuration file named .config for use by the Makefile when compiling the kernel. The Makefile at the top of the source code directory tree is the entrance to the entire kernel source code management and plays a decisive role in the source code compilation of the entire kernel. When compiling the kernel linuxc, top
Jun 28, 2024 am 08:18 AM
How to solve the problem of automatic line break conversion in Git
I used to work on Linux, so I didn't encounter the problem of file line separators when using Git. Now I suddenly switched to using Git on Windows and found that files that turned out to be Unix file line terminators were displayed when using gitdiff. All lines are modified. The cause of this problem is Git's clever "automatic newline conversion" function. There are several ways to fix this problem. When installing "Git for windows", on the "Configuing the lineending conversions" page, change the default selection to "Checkoutas-is, commitas-is" if it has already been installed.
Jun 28, 2024 am 08:11 AM
How to synchronize time with the Internet under Linux
1. Install ntp[root@server-2~]#yuminstall-yntpdate 2. Synchronize time //Method 1. Use domain name to connect, which requires DNS resolution and is slow. [root@server-2~]#ntpdatepool.ntp.org//Method 2, use IP connection, super fast. [root@server-2~]#ntpdate120.24.81.91http://www.pool.ntp.org is the official website of NTP. On this we can find the NTPServercn.pool.ntp.org from our country. It has 3 server addresses: service
Jun 28, 2024 am 07:34 AM
Lao Pao'er teaches you how to configure the network bridge on Debian Linux
How to install brctl Enter the following apt-get command: $sudoaptinstallbridge-utils How to set up a bridge on DebianLinux You need to edit the /etc/network/interface file. However, I recommend placing a fresh configuration in the /etc/network/interface.d/ directory. The process of configuring a bridge in DebianLinux is as follows: Step 1 - Find out your physical interface using the ip command: $ip-finetas Example output is as follows: 2:eno1:mtu1500qdiscpfifo_faststateUPgroupdefaul
Jun 28, 2024 am 03:15 AM
Keep Linux accurate time
How to keep the correct time, how to use NTP and systemd to keep your computers in sync without abusing time servers. What is its time? Linux is weird when it comes to telling you the time. You may think that you are using the time command to tell you the time, but it is not because time is just a timer that measures how long a process has been running. To get the time, you need to run the date command. If you want to see more dates, you can run the cal command. Timestamps on files can also be a source of confusion, as there are two different ways to display them, depending on your distribution's default settings. Here is an example from Ubuntu16.04LTS: $l
Jun 27, 2024 pm 01:27 PM
How to install python3.5.3 under linux
To install the dependencies that may be used by python3.5, yuminstallopenssl-develbzip2-develexpat-develgdbm-develreadline-develsqlite-devel, go to the python official website to find the download path, and use wget to download wgethttps://www.python.org/ftp/python/3.5.3/Python -3.5.3.tgz Unzip the tgz package tar-zxvfPython-3.5.3.tgz Move python to /usr/local mvPython-3.5.3/us
Jun 27, 2024 am 11:42 AM
Explore file types in Linux systems: ordinary files, directories, and special files
The following sections discuss the several file types in the Linux system and the basic functions of performing I/O when developing C language in Linux. However, in the process of giving examples and experiments, there are several file types in the Linux system, all of which revolve around ordinary files. File types in Linux Remember in Section 9, when we talked about the Unix system (Linux is a Unix-like system) that "everything is a file"? Most files in unix systems are ordinary files and directories, and these two types of files are also the most commonly used. For example, the /usr directory and the hello.txt text file above it belong to ordinary file types. In fact, linuxsite:infoq.cn, the Linux system divides all files into
Jun 27, 2024 am 10:58 AM
In-depth understanding of patch files: diff instruction generation and common parameter analysis
The patch file is generated by the diff command (linuxdiff, svndiff, gitdiff, gitformat-patch). First, let’s introduce the diff command and its common parameters: diff: The function of diff is to compare the differences between two files and then record them, which is the so-called diff patch. Sentence format: diff [option] source file (folder) destination file (folder) Linux operating system is good, it is to patch the source file (folder) linux patch marge linux to make it into the destination file (folder) ), the term is "upgrade". The three most commonly used options are introduced below: -r is a recursive option. This option is set
Jun 27, 2024 am 08:35 AM
PDF operation guide for linux operating system
1. LibreOfficeDraw LibreOfficeDraw is an open source and free office suite that is not only suitable for Linux systems, but can also be used on Windows and MacOSX systems. LibreOfficeDraw official documents state that the system will be permanently free for enterprises and individuals, and the code will be fully open. For those who don't have too many special requirements for PDFs (such as just need to edit PDF documents), then this is a good tool. But if you have high requirements for PDF tools (such as needing to edit scanned documents), then Draw may no longer be an ideal tool. 2. PDFStudioPDFStudio is a commercial software that
Jun 26, 2024 pm 11:00 PM
Detailed explanation of two ways to merge git code
This kind of merge of gitMerge merges the history of two branches together. The existing branch will not be changed. It will compare the different files of both parties and cache them, generate a commit, and push. Advantages: safe, existing branches cannot be changed. Will be modified Disadvantages: It will more or less pollute the branch history, and it will increase the difficulty of understanding the project history when looking back at the project. Uses: Generally used for the public master main branch gitRebase. This kind of merger is usually called "rebase". It is to modify the commit history, compare the commits of both parties, then find out the differences and cache them, and then push them to modify your commit history. Pros: Project history will be very tidy Cons: Security and traceability are poor, you won’t be able to tell
Jun 26, 2024 am 08:36 AM
Functions of the ping command and differences between Linux and Windows systems
The function of the ping command is to test the network connectivity between hosts. It sends out data packets based on the ICMP transmission contract to test the Linux network delay, and requires the other host to reply. If there is no problem with the network function of the other host and the firewall allows the traffic, Then the information will be replied to, and we will know that the other party's host system is online and running normally. However, it is worth noting that there are certain differences between Linux and Windows. The ping command under the Windows system will send out 4 requests and then terminate the command manually; while the Linux system will not terminate manually and requires the user to automatically press the key combination." Ctrl+c" to end, or add the -c parameter when initiating the command to limit the number of messages sent. Test environment: Ce
Jun 26, 2024 am 07:31 AM
Two ways to configure Linux to automatically start executing scripts at boot
The script to be started at boot, qidong.sh[root@c69-01scripts]#vim/server/scripts/qidong.sh[root@c69-01scripts]#cat/server/scripts/qidong.sh#!/bin/bash/bin /echo$(/bin/date+%F_%T)>>/tmp/qidong.log Method 1: Modify /etc/rc.local/etc/rc.local. This file is a link file [root@c69-01~ ]#ll/etc/rc.locallrw
Jun 25, 2024 pm 04:49 PM
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