extended attributes

Useradd command, add User:ReferencenumberDescriptiondescribed  - C Comment Add a note to a new user - D home_dir specify a name for the main directory (if you do not want to use the login name as the main directory) - e expire_date

the inode of the Linux file systemIndex nodeindex node Inode: What is actually stored is some information about the actual data called "metadata" (that is, the description of the file attributes). For example: File size, device identifier, user

First, briefAs implies, file permissions are the extent and extent to which the user has the ability to perform operations on the file. Before you explain Linux file permissions, let's look at a common command in Linux, lsSecond, LS command and

1. The Stat Family#include #include #include int stat (const char *path, struct stat *buf), int fstat (int fd, struct stat *buf), int lstat (const char *path, struct stat * BUF);struct stat{dev_t St_dev;     ino_t St_ino;     mode_t St_mode;   

Disk ManagementSimple overviewFile systemA method of organizing files on disk, called a file system.Ext3 EXT4 Differences:Ext3 maximum support is 16TB file system, maximum 2TB files, support up to 32,000 subdirectoriesEXT4 supports 1EB file system, 1

(The English part is a turn.) Code is personal code)1 What ' s inotify   The inotify  api provides a mechanism for monitoring file system events. Inotify can used to monitor individual files, or to monitor directories. When a directory is

1, Q: Ls-l after seeing some of the properties of the folder is [email protected], what does this @ mean?A: @ is unique to Mac OS and it means telling the user that the file/folder also has extended attributes (extended properties). You can do this

C Language and PHP syntax differences Point TechnologyMaybe yes posted on 2015-02-05 16:09Original link: http://blog.lmlphp.com/archives/80 from: lmlphp backyardPHP's grammar rules are very similar to the C syntax rules, and many of the internal

Common ways to use commands:1.echoEcho-display a line of text650) this.width=650; "src=" Https://s3.51cto.com/wyfs02/M00/08/65/wKiom1ngopOgixq6AAAsIrkT-rE013.png "title=" 2.png "alt=" Wkiom1ngopogixq6aaasirkt-re013.png "/>Get more precise command

A data dictionary is a collection of related descriptions of data and objects in a data model that helps programmers and users look up data and objects when they create applications and reports. When you use the data model, it is ideal to create a

Problem I need a way to create a dictionary that keeps up with the latest data. I made a lot of changes to the database, and I spent more time updating the database documents than the database administration time. Expert answers If you store

One, what is deferred environment variable extension? Delay variable Full name "Delay environment variable extension", to understand this thing, we have to understand what is called variable expansion!When we explain our command, CMD will first

Read an open source framework, the most want to learn is the design of ideas and implementation techniques. Needless to say, the analysis of jquery has been rotten for so many years and has been read long ago, But these years have been to do

In the process of project development using object-oriented language, more "inheritance" features are used, but not all scenarios are suitable for the use of "inheritance" features, and some of the basic principles of design patterns are also

Btree data structure can be said to be the basis of Btrfs file system. It provides a common way to store different data types. It stores only 3 data types: Key, item, and block header. The definition of Btrfs_header is as follows: struct

Kotlin Programming related knowledge points : Kotlin programming using IntelliJ IED and understanding Source files (. kt) Kotlin programming and other properties Kotlin programming methods such as using Kotlin programming Kotlin programming of the

is currently involved in the restructuring of a core large system of the company. This paper combs some steps and experiences of large-scale system reconfiguration. Overview With the continuous development of the company's business, the increasing

Design | data | database | Database design Erwin is used to establish the entity-relationship (E-R) model, which is an excellent case tool for relational database application development. Erwin can easily construct entities and contacts, express

database table structure changes, can be said to be a headache in the development process. Headache to a lot of programmers in order not to change the table structure, preferring to write a bunch of "compromise" code in the code is reluctant to move

10. OpenStack Object Storage Service (SWIFT) configuration: I added two hard drives (SDB,SDC) to the compute node for storage, and the compute node in my build is the storage node, because the computer can't pull more virtual ... Brief