file position

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fopen () function

1.2 file input and output function keyboard, monitor, printer, disk drive and other logical devices, the input and output can be through the file management method to complete. And the most used in programming to be considered disk files, so this

Linux File Programming-fopen function

1.2 file input and output function keyboard, monitor, printer, disk drive and other logical devices, its input and output can be done through file management methods. The most important to use in programming is disk files, so this section is

The basic course of C language (iii) input and output functions and control flow statements (10)

3. Random reading and writing of files Sometimes the user wants to read the information directly in the middle of the file, it is obviously inconvenient to read and write in the file in order to start from the file header until the required file

Linux-Xxd from Man Manual (MARK)

XXD (1) General Commands Manual XXD (1)NAMEXxd-make a hexdump or do the reverse.SynopsisXXD-H[ELP]xxd [Options] [infile [outfile]]Xxd-r[evert] [options] [infile [outfile]]DESCRIPTIONXXD creates a hex dump of a given file or standard input.  It can

Fgets, fputs, ferror, feof, stdin, stdout, eof, fopen, fclose, fgetc, fputc, getchar, putchar

Document directory Parameters Return Value Parameters Return Value Parameters Return Value Parameters Parameters Return Value NoteGets, fgets, fgetc, GETC, getcharPuts, fputs, fputc, putc, putchar Fgets Functionchar * fgets ( char * str,

MySQL master copy (2)

MySQL master-slave replication architecture and implementation Miscellaneous 1, set slave node as read-only modeMariaDB [(None)]> SHOW GLOBAL VARIABLES like ' read_only '; +---------------+-------+| variable_name | Value |+---------------+-------+|

Python file operations

File operations, as the name implies, is the existence of files on the disk for various operations, text files are read and write.1. Procedures for document Operation(1) Open the file, get the file handle and assign a value to a variable(2)

I/O routines input/output API functions

Input and Output The I/O functions read and write data to and from files and devices. file I/O operations take place in text mode or binary mode. the Microsoft run-time Library has three types of I/O functions: Stream I/O functions treat data as a

MySQL's auto-failover feature

Today to experience MySQL's auto-failover function, here is a tool MySQL Utilities, it is very powerful. This tool provides the following features:(1) Management tools (clone, copy, compare, diff, Export, import)(2) Copy tool (installation,

MySQL binary log (bin-log) configuration and related operations

1. Turn on Bin-log(1) Inside the My.con configuration file[Mysqld] #选项添加Log-bin=mysql-bin #日志文件名称, location not specified, default data file locationRestart MySQL ServiceLog_bin is the file name of the generated bin-log, the suffix is the 6-digit

Nested dictionaries and collections practice examples

Nested dictionary exercises:Av_catalog = { "Europe":{ "www.youporn.com": ["a lot of free, the world's largest","General Quality"], "www.pornhub.com": ["a lot of free, and it's big .","higher quality than Yourporn"],

Microsoft's _ Tell function implementation

Microsoft's _ Tell function implementation Wentao sun. Autodesk, Inc. (Shanghai, China .)   Microsoft's _ Tell function can return the position of the current file operation pointer Based on handle (INT. There is no similar function on Linux

How to Implement synchronous asynchronous backup for mysql Databases on different servers

1. Server StatusServer A: 192.168.1.1Server B: 192.168.1.2 2. Create a synchronization userHost Domain A: 192.168.1.2 User Name A: sync_a Password A: aaaHost Domain B: 192.168.1.1 username B: sync_ B password B: bbbAssign at least the following

The difference between text mode and binary mode with file streams

FIO14-C. Understand the difference between text mode and binary mode with file streams skip to end of metadata Created by Justin pincar, last modified by Carol J. lallier on Oct 14,201 3 Go to Start of metadata Input and output are mapped into

Asynchronous backup method of two MySQL database synchronous implementation

1. Server StatusServer a:192.168.1.1Server b:192.168.1.2 2. Create a synchronization userHost Domain a:192.168.1.2 username a:sync_a password a:aaaHost Domain b:192.168.1.1 username b:sync_b password b:bbbAssign at least the following permissions

NiO and IO in the Java file system

Java has introduced the Java NIO mechanism since jdk1.4:The notable feature of NiO is the channel, buffer, selector (selector), which adds non-blocking calls that are not in the traditional I/O mechanism (this is useful for network communication and

Python Road, Day2-python Foundation 2

The content of this section list, tuple operations String manipulation Dictionary operations Collection operations File operations Character encoding and transcoding 1. List, tuple operationsThe list is one of the

Io--randomaccessfile class

The Randomaccessfile class can implement random read and write operations on files. The file location pointer of the new Randomaccessfile object is located at the beginning of the file; After each read and write operation, the file

MySQL Master-slave problem

Mysql Database Master-slave experience finishingManagement MySQL master and slave has more than 2 years, managed more than 200 sets of MySQL master and slave, almost related to each version of the master and slave, this blog is summarized, part of

MySQL master copy of an article (reproduced)

Management MySQL master and slave has more than 2 years, managed more than 200 sets of MySQL master and slave, almost related to each version of the master and slave, this blog is summarized, part of it is from the network, most of it is based on

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