Linux File and directory permissions

1. Linux Users and user groupsLinux is a multi-user operating system, in order to control file permissions, the file and directory permissions are divided into the following three kinds of roles:User: File owner, Group: User groups, Others: other

Install Coreseek and mmseg under Linux

1Tar xzvf coreseek-3.2.14.tar.gz2CD mmseg-3.2.14/./configure--PREFIX=/USR/LOCAL/MMSEG3Checking for vfprintf ... yesChecking for waitpid ... yesConfigure:creating./config.statusConfig.status:creating MakefileConfig.status:creating

Linux programming timed execution of a function

ObjectiveThe signals in Linux provide the function of soft interrupts. Provides a way to handle asynchronous time, which can be reasonably arranged by signaling an asynchronous task.Linux defines the following major system signals: Name Default

Linux Small Knowledge Translation-"raid"

Recently the term "raid" has become more famous. "raid" is a technique used to combine multiple HDDs to improve storage reliability.So, do you know anything about the "raid" of "raid 0""raid 1""raid 5" in RAID?The easiest thing to understand in RAID

Linux Mail server architecture

The above procedure just realizes the simple local user's file send function, only needs to install the Mailutil, does not need installs the configuration SendMail, looks the bird elder brother's Linux private dish to write should be the local user

Linux gets CPU temperature

CentOS Series 1 yum installlm_sensors 2 sensors-detect 3 sensors Ubuntu Series (more service Module-init-tools start one step) 1

Test based on cyclic buffering in this blog version (Linux environment)

#include #include#include#include"Ringbuffer.h"Static intB_flag =0;p thread_mutex_t Mutex=Pthread_mutex_initializer;#defineTx_lock (LOCK) pthread_mutex_lock (&lock)#defineTx_unlock (Lock) Pthread_mutex_unlock (&lock)void* Readbufferthread

Arch Linux Minimized installation LXDE desktop environment

To install a minimized LXDE desktop environment: Pacman-s Lxde-common Install LXDE Session: Pacman-s lxsession Do not install this cannot log into the desktop environment To install the LXDE panel:

Linux # Kubuntu suspended animation, End process method

Analysis Ideas:To know what processes are running, which end of the target process, how to get a running process, and what actions are required.Search by search engine, keyword:kconsole list process , query related information, post reference

The path of Linux learning Bash and its features

We know when we use the mouse to click, or enter a command, the system will play to help us complete a task, then when we click on a link, the system is how to know to complete the corresponding operation? This is done through the shell.So what is a

Directory in Linux system

1. Hierarchical structure of Linux file systemIn a Linux or Unix operating system, all files and directories are organized into an inverted tree structure that starts with a root node.The top-most layer of the file system starts with the root

& Lt; MAIL service postfix + mysql & gt; MAIL Article 2

  Environment: this service is based on the first article. It is best to build the first article.   The premise of using this service is that your system has installed the msql and postfix services. Postfix + mysql is mainly used in combination with

Troubleshooting of Linux system memory insufficiency caused by excessive Cache Usage

Problem description When the memory usage of the Linux Server exceeds the threshold, an alarm is triggered. Troubleshooting First, use the free command to observe the system memory usage, as shown below: total       used       free     shared   

Linux skills that every geeks should know (1)

What is the distinction between common Linux users and super geeks? Simple: it is used to learn the skills, tips, and technical skills that transform Long-time work into instant work. If you want to improve your efficiency without having to do the

In Linux, how does one execute the bin file?

In this short tutorial, I will instruct you how to install the. bin file on your Linux machine. Not some terrible terminal commands, I promise! But I will also show how to operate on the terminal. What is the. bin file? The. bin file is a

A magic Linux Download Manager: uGet

Powerful Download Manager is not common in Linux, but it has some amazing features. uGet is one of them. When people talk about the download manager on the Linux platform, they usually think that these are on the terminal. In most cases, they are

Linux System Fault Analysis and troubleshooting

When dealing with various faults in Linux, the symptoms of the fault are first discovered, and the cause of the fault is the key to final troubleshooting. Familiar with the log management of Linux system, understanding the analysis and solution of

Detailed description and configuration of Linux disk partition alignment

What is Disk Partition Alignment and Partition Alignment) A Windows disk has a structure called Master Boot Record (MBR). Its default size is 63 blocks and each size is 512 bytes ). Its existence makes the initial position of the disk and the

Mysql setup under RHEL6

Mysql ========== Yum install mysql-server Mysqladmin-uroot-predhat password westos modify the local mysql root password Mysqladmin-uroot-predhat-h 192.168.0.188 password westos modify the root password of the remote 192.168.0.188 mysql

Linuxstrings command-ELF File Format and "link and load"

A string command The string command is mainly used to view the ASCII string in a non-text file. Of course, you can also view the corresponding string of a text file. The command is used as follows: [22: 41huangyk @ leetcode] $> strings-a numDistinct

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