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Detailed explanation of several ways PHP handles passwords

This article mainly introduces several ways in which PHP handles passwords, and introduces the encryption processing of passwords in detail. You can learn more if you need it.

Dec 12, 2016 pm 04:49 PM

PHP处理密码的方式

The Linux command I have used - unzip - to decompress zip files

The zip file is a commonly used compressed file format. Compression software such as WinZip and WinRar all support the zip file format. Even the java jar package is in the zip format, and the Firefox plug-in xpi file is also in the zip format. Linux's support for zip files is also very thoughtful. It provides commands such as zip, unzip, and zcat to support it. The topic of this article is to talk about using the unzip command to decompress compressed files in zip format. When we need to upload many files on Windows (such as all files in a directory) to Linux, we can first package these files into a zip file, then upload them, and then use un

Dec 12, 2016 pm 04:49 PM

unzip

linux zip/unzip command

Function description: Compress files. Syntax: zip [-AcdDfFghjJKlLmoqrSTuvVwXyz$][-b <working directory>][-ll][-n <suffix string>][-t <date and time>][-<compression efficiency>][compressed file][ File...][-i <template style>][-x <template style>] Additional explanation: zip is a widely used compression program. After files are compressed by it, a compressed file with a ".zip" extension will be generated. .

Dec 12, 2016 pm 04:45 PM

unzip

Introduce the use of vi command under linux

One of the most powerful editors - vi vi is a screen editor provided by all UNIX systems. It provides a window device through which files can be edited. Of course, people who know a little bit about UNIX systems will more or less find vi to be super difficult to use, but vi is the most basic editor, so I hope readers can learn it well and they will be able to use it smoothly in the UNIX world in the future. Unhindered and effortless, because several other text processors are not standard equipment in UNIX. Maybe someone else's Linux machine does not have joe or pico installed. If you don't know vi, then you may not be able to do it.

Dec 12, 2016 pm 04:43 PM

vi命令

vi command list

Vi's three operating modes: normal mode, also known as command mode, insert mode, command line (cmdline) mode. The first thing you enter after entering Vi is the normal mode. Vi waits for the editing command input, which is the letter entered at this time. All will be interpreted as commands. In normal mode, enter the insert command i, append command a, open command o, etc. to enter insert mode. In insert mode, any characters entered by the user are saved by Vi as file content and displayed on the screen. During text entry, press the Esc key to return to normal mode. In normal mode, use: to execute Ex commands, use ? and / to search, and use ! to call Shell commands. After the last line of command is executed, Vi

Dec 12, 2016 pm 04:41 PM

vi 命令

jquery+json universal three-level linkage drop-down list

jquery+json universal three-level linkage drop-down list, there are three versions of implementation in the code

Dec 12, 2016 pm 04:39 PM

jquery+json实现三级联动

Detailed explanation of vi command under linux

Detailed explanation of the vi command. The vi command is a commonly used and important command under Unix. It can edit one or more files in full-screen mode. If no file is specified when vi is executed, the vi command will automatically generate an unnamed, empty working file. If the specified file does not exist, a new file will be created with the specified file name. If the modifications to the file are not saved, the vi command does not change the contents of the original file.

Dec 12, 2016 pm 04:29 PM

vi命令

Compilation of how to use vi command to modify files and save them under Linux

vi is a screen editor provided by all UNIX systems. It provides a window device through which files can be edited.

Dec 12, 2016 pm 04:27 PM

vi命令

In-depth understanding of the implementation of jQuery.data()

This article mainly introduces the implementation of jQuery.data(). Now I will share it with you and give you a reference. Let’s follow the editor and take a look.

Dec 12, 2016 pm 04:27 PM

jQuery.data() 的实现

A complete list of vi and vim commands in Linux

vi is a very common text editor under unix/linux. There are various variants of vi, and there are different variant software on different machines. Among them, vim is easier to use and more widely used. vim is the abbreviation of Vi IMproved. Represents better vi. This article will talk about some of the more useful and commonly used commands.

Dec 12, 2016 pm 04:26 PM

vi 命令

A complete list of vi commands under linux

Enter the vi command vi filename: open or create a file, and place the cursor at the beginning of the first line. vi +n filename: open the file, and place the cursor at the beginning of the nth line. vi + filename: open the file, and place the cursor at the beginning of the nth line. vi +/pattern filename at the beginning of the last line: open the file and place the cursor at the first string matching pattern vi -r filename: the system crashed when editing with vi last time, restore filename vi filename... .filename: Open multiple files and edit them in sequence

Dec 12, 2016 pm 04:24 PM

vi 命令

Detailed introduction and examples of awk command and awk programming language

Dec 12, 2016 pm 04:22 PM

awk命令

Detailed explanation of linux awk command

Awk is a line processor: Compared with the advantages of screen processing, there will be no memory overflow or slow processing problems when processing huge files. It is usually used to format text information. Awk processing process: Process each line in turn and then output

Dec 12, 2016 pm 04:14 PM

awk命令

Detailed explanation of awk command

Detailed explanation of awk command Simple use: awk: perform operations on each line of the file. awk -F: '{print $1,$4}': Use ':' to split this line and print out the first and fourth fields of this line. Detailed introduction:

Dec 12, 2016 pm 04:12 PM

awk命令