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Judging teacher PHP Devil Special Training Note (2), judging Devil
One, this lesson will learn a few lazy functions:
1, File_put_contents
(PHP 5, PHP 7)
file_put_contents- Writing a string to a file
Description
int file_put_contents ( string
ArticleDirectory
OS module attributes
File object Method
OS module File/directory access function
Path Name access function in the OS. Path Module
OS module attributes
Attribute name
Description
In Linux, shell displays the user name and host name, And linuxshell1. Problem Description
Recently, I re-installed something on the server. As a result, the shell interface I logged on to became displayed-bash-4.2 $, which looks ugly and
Shen Yi's notes on PHP devil training (2), Shen Yi's devil
1. This course will learn a few lazy functions:
1、file_put_contents
(PHP 5, PHP 7)
File_put_contents-write a string to a fileDescription int
File_put_contents(String
$filename, Mixed
$data[,
Http://billie66.github.io/TLCL/book/chap01.html:The graphical user interface (GUI) graphical interface
The Command Line
Linux is written based on the operating system of the Unix family.
Chapter 2 What is Shell:
Bash is a type of shell from the
1. zip file Directory Traversal introductionBecause the ZIP archive is allowed to exist in the package file ". /"string, an attacker could take advantage of multiple". /"Change the location of a file in the ZIP package when extracting, overwriting
CD: Changes the current working directory. PWD: Displays the current working directory name, such as where it is located in the file system. BaseName: Displays the end portion of the file path. DirName: Displays the part of the file path that is
Process RelationshipsProcess GroupA process group is a collection of one or more processes. Typically, they are combined in the same job, and each process in the same process group receives various signals from the same terminal, each with a unique
1.ls–listLS enumerates the contents (files or folders) of the current working directory, just as you open a folder in the GUI to see what's inside.2.mkdir–make Directorymkdir for creating a new directory3.pwd–print Working DirectoryPWD Displays the
1. Documentation Basics1. A file is a collection of data stored on external media, the base unit of the file is a byte, and the file contains the number of bytes that are the length of the file. Each byte has a default location, starting at 0, the
A daemon is a process that has a long lifetime. They often start when the system boots, and only terminate when the system shuts down. Because they do not have control terminals, they are running in the background.Features of the daemon processThe
The Dameon process is also called the Daemon, in general he has the following 2 characteristics :1. The life cycle is very long, once started, generally will not terminate, until the system is launched, but the Dameon process can be stopped or send
PWD: View current working directoryObjective:Linux with the PWD command to see the "Current working directory" of the full path, is often mentioned in the directory, more used in the production environment multi-level directory to see the current
Brief introduction
The OS module is primarily used to provide high-level operation of the system.
Common methodsOs.access (path, mode) # Verify permission Mode Os.chdir (path) # Change current working directory Os.chflags (path, Flags)
Python file I/O Print to screenThe simplest way to output this is to use the print statement, which you can pass 0 or more comma-separated expressions. This function converts the expression you pass to a string expression and writes the result to
The file object is first created using the Open function, and the following table lists the functions commonly used by the file object:
Serial Number
Method and Description
1
File.close ()Close the file. The
C language GETCWD () function: Get the current working directoryheader file:
#include
To define a function:
char * GETCWD (char * buf, size_t size);
Function Description: GETCWD () copies the current working directory
This is another interesting concept, daemon in English is "elf" meaning, as we often see in the Disney animation, some will fly, some will not, often around the cartoon protagonist, Shing to mention some advice, occasionally unlucky to hit the
Write in front:1, "You must know about the Linux file directory operation of the 12 common commands" is the landlord collected on the Linux file directory operations most commonly used commands, including the file or directory of new, copy, move,
Common modules:1.time and datetime modules;2.random module;3.os, SYS and shutil modules;4.json, pickle and shelve modules;5.xml and ymal processing;6.configparser and sbuprocess modules;7.hashlib module;8.collections module;Modules and Packages1.
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