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- Scheduled tasks under Linux--crontab
- 1. Cron service cron is a scheduled execution tool under Linux that can run jobs without manual intervention. servicecrondstart//Start service servicecrondstop//Close service servicecrondrestart//Restart service servicecrondreload//Reload configuration servicecrondstatus//View service status 2. Cron configuration file: /var/spool/cron/ This directory stores each Users include root's crontab tasks. Each task is named after the creator, such as the cr created by tom.
- LINUX 1208 2024-06-07 20:24:40
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- Essential skills for learning Linux: multiple ways to find files revealed
- When learning Linux, finding files is also a pain point. Linux searches the directory where the file is located, especially when the system does not turn on graphics. As a mature system, Linux also provides a variety of command line tools and graphical interface tools to help us search and find files. Here are some common ways to find files: find command: The find command is one of the most commonly used file search commands in Linux systems. It can search for files in the entire file system according to specified conditions. Linux searches the directory where the file is located and returns a list of matching files. The following are some common uses of the find command: locate command: The find command is relatively slow, and the locate command is a database-based file.
- LINUX 1116 2024-06-07 14:03:29
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- Linux chmod command Master these common Linux commands and easily control the Linux system
- There are indeed many Linux commands, but people who are familiar with Linux will never be troubled by too many Linux commands. Because we only need to master common commands to fully control Linux. Next, let’s go up and take a look at these commonly used Linux commands! 1. File directory operation 1.ls command The ls command can not only view the files contained in the Linux folder, but also view file permissions (including directory, folder, file permissions), view directory information, etc. Command format ls [options] [directory name] Common parameter usage examples 1. List detailed information on all files and directories in the home directory. ls-a-l/homels-al/home2. List the current directory
- LINUX 663 2024-06-07 12:02:31
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- Using CUPS to provide printing services and power management software applications under Linux
- Using CUPS to provide copy services and power management software under Linux can create a very easy-to-use, high-performance copy server.
- LINUX 1239 2024-06-05 22:23:27
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- Linux kernel design and implementation-Linux classic book recommendations
- Recommended classic Linux books include "Brother Niao's Private Cooking", "In-depth Understanding of Computer Systems" and "Linux Kernel Design and Implementation". Recommended Linux classic books "Intermediate Programming in UNIX Environment" "Intermediate Programming in UNIX Environment" is known as the "New Testament of UNIX Programming" Introduction to the Linux system. It is an essential textbook for learning Linux system programming and network programming. This book introduces Linux in detail Various programming sockets in the environment, including process control, signal processing, file I/O, network I/O, etc., and provides a wealth of example codes, which is suitable for readers with a certain programming foundation to learn in depth. "In-depth Understanding of Computer Systems" and "In-depth Understanding of Computer Systems" are classic textbooks that comprehensively introduce the principles of computer systems.
- LINUX 603 2024-06-05 18:52:26
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- Parsing Linux multi-application docker automatic deployment script
- Summary: Linux multi-application docker automatic deployment script can be combined with jenkins distributed deployment. Linux multi-application docker automatic deployment script can be combined with jenkins distributed deployment parameters: image name: port format: version number. For example: spring-client:8764:0.0 .11. First use maveninstall to package the project into the target directory 2. The Dockerfile path corresponding to the project is: /src/main/docker/Dockerfile 3. The script automatically copies the Dockerfile and program files and automatically packages the image for deployment 4. When the docker command is run, add -- re
- LINUX 672 2024-06-05 13:47:05
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- Ten aspects to strengthen Linux container security
- Container security solutions need to consider different technology stacks and different stages of the container life cycle. -1. Container operating system and multi-tenancy -2. Container content (using trusted sources) -3. Container registration (encrypted access to container images) -4. Build process security -5. Control what can be deployed in the cluster -6. Container Orchestration: Enhancing Container Platform Security - 7. Network Isolation - 8. Storage - 9. API Management, Endpoint Security and Single Sign-On (SSO) - 10. Role and Access Control Management Containers provide an easy way to package applications Deploy them seamlessly from development and test environments to production. It helps ensure consistency across a variety of environments, including physical servers, virtual machines (VMs), or private or public clouds. Leading organizations build on these good
- LINUX 607 2024-06-04 16:45:38
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- In-depth analysis of Linux directory structure: root directory, user directory, system configuration, etc.
- 1. Linux directory structure 2. Directory purpose/root directory/rootroot administrator’s home directory/boot stores Linux startup files/etc storage system, software configuration files/usr user command program storage directory/home common homeowner’s directory/mnt device /File system mount point/bin stores the most commonly used operating commands/opt application software installation directory, such as databases, etc./tmp temporary directory The directory where the Linux search file is located and stores temporary files/var variable information storage area (system software log, website Files, etc.)/proc virtual file system The directory where the linux search file is located, including process information/sbin system administrator command storage directory/dev device file, (
- LINUX 1382 2024-06-03 21:11:08
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- Go to JDK installation 1 to download a JDK for Linux Platform
- one. JDK installation under Linux 1. Download a JDK for Linux Platform. It is recommended to download the RPM self-extracting format RPMinself-extractingfilej2sdk-1_4_2_06-linux-i586-rpm.bin 2. Upload to the Linux server and execute the command under the shell [root@LinuxServerrpm]#chmod755j2sdk-1_4_2_06-linux-i586-rpm.bin[root@LinuxServerrpm]#./j2sdk-1_4_2_06-linux-i586
- LINUX 741 2024-06-03 20:43:52
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- PHP does not support multi-threading. Sometimes it is not so fun to deal with problems. Learn from it.
- How to add a scheduled task to execute a php file in a linux system? How to add a scheduled task to execute a php file in a linux system? PHP does not support multi-threading, and sometimes it is not so fun to deal with problems. The editor of Xuela takes the php file as an example to explain the planned tasks under Linux. How to add scheduled tasks to execute php files in Linux system 1. Open the Linux system command line interface. Enter the following command in the command line interface: whichphplinuxphp scheduled task and press Enter. 1. Remember the php path in the previous step, continue to enter at the command line: crontab-e, press Enter, press the "i" key to enter the editing mode of the vi editor. What system is linux? In the current mode, enter the following command
- LINUX 419 2024-06-03 19:15:50
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- Some instructions and commands for creating users and specifying user groups in Linux
- Create a user and specify a user group in Linux 1. View all users cat/etc/passwd After logging in, copy the user name at the top of each line. About uid: 0 means the administrator (root) linux sets the default gateway, 1-500 means the system user linux creates a user command, 501-65535 means the ordinary user cat/etc/group is used to view all user groups, similar to viewing users 2. Add user groupaddzhangsangroup#Create user group zhangsangroupuseradd-gzhangsanzhangsanCreate user zhangsan and join zhangsang
- LINUX 955 2024-06-03 16:56:32
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- Linux Chinese Forum Linux Distribution Version: Comparison and Choice between Manjaro and Deepin
- Introduction There are many distributions of Linux. Currently, Manjaro is commonly used in the mid-range desktop version. I also switched to Deepin, but there were always some minor problems, so I switched back to Manjaro. The service version mainly uses CentOS. Although the team uses the Linux Chinese forum at work, it is easier to manage if it is unified. Basically all have been upgraded to CentOS7. Why not still use DeepinDeepin has already done a good job, it just needs time to settle. Although the development time is relatively short, it is already good to be like this, but it is still developing rapidly. I think it is possible to replace the linux web server with localization. If we do a good job in the ecological linux Chinese forum linux command line, we can gradually replace it.
- LINUX 1021 2024-06-03 16:38:00
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- How to create a new user in Linux? How to use the create new user command in Linux
- Adding users to a Linux computer is a basic administrative task, and there are several ways to accomplish this. Each method of creating users has advantages and disadvantages, and we will introduce you to three different methods of user creation. Why Linux Computers Need Users A personal computer without users is not very useful. Linux supports multiple users. Whether they log in at the same time and share power to the computer, or log in individually while using the computer exclusively, each person needs a unique user account. A user account encapsulates that user's work and provides privacy. It also allows control and management to be applied to the account. By changing the properties of a user account (such as the groups they belong to), different users can have
- LINUX 1009 2024-06-03 15:08:37
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- Correct Bash command typos in Linux
- I know you can press the up arrow to bring up the command you ran, then use the left/right keys to move to the misspelled word and correct the misspelled word, and finally press enter to run it again, right? But wait. There is an easier way to correct misspelled Bash commands in GNU/Linux. This tutorial explains how to do this. Please read on. Correcting Misspelled Bash Commands in Linux Have you ever run a mistyped command similar to the one below? $unme-rbash:unme:commandnotfoundDid you notice? There is a bug in the above command. I am missing the letter a in the uname command. I've been guilty of this stupidity many times
- LINUX 809 2024-06-03 13:06:59
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- All installed Linux kernels and their associated files are stored in Alpine
- Original source By default, all installed Linux kernels and related files are stored in the /boot directory. Just use the find command to view the list of installed kernels: $find/boot/vmli*/boot/vmlinuz/boot/vmlinuz-5.4.0-64-generic/boot/vmlinuz-5.4.0-65-generic/boot/ vmlinuz.old As you can see in the previous output, I have two Linux kernel versions installed on my Ubuntu desktop machine (5.4.0-64 and 5.4.0-65). Now we'll see distribution-specific ways to find out what has been installed
- LINUX 620 2024-06-03 12:16:42
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