winzip compression

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Apache PHP gzip Compression Output implementation method, apachegzip_php tutorial

Apache PHP gzip Compression Output implementation method, Apachegzip First, Gzip introduction GZIP is the abbreviation for GNU Zip, which is a file compression program for GNU Free Software and is often used to represent the gzip file format. The authors of the software are Jean-loup gailly and Mark Adler. October 31, 1992 the first public release, the version number is 0.1, the current stable version is 1

Compression/decompression under Linux

. cpio. rpm. Deb. SLP. Arj. rar. Ace. Lha. Lzh. Lzx. Lzs. Arc. SDA. lnx. Zoo. cab. kar. cpt. Pit, sit. SeaDecompression: sEx x filename.*Compression: SEx a filename.* FileNameSex just call the relevant program, itself and no compression, decompression function, please note!Sex please to: http://sourceforge.net/projects/sex download!After unpacking, copy the sex to the/usr/bin directory (other directories sp

Ubuntu12.04 install the compression software 7z and ubuntu12.047z

Ubuntu12.04 install the compression software 7z and ubuntu12.047zOpen the software sharing center, search for 7z, and install it.Or on the terminal sudo apt-get install p7zip-fullNote: (from Baidu)7-ZipIs an open-source software, most of the source code followsGNU LGPLLicense, with 7-Zip software, free of charge, is truly free and open. You can use 7-Zip on any computer, including computers for commercial purposes. If you do not donate or pay 7-Zip, i

The implementation method of PHP gzip compression output _php instance

First, Gzip introduction Gzip is a GNU zip abbreviation, it is a GNU Free software file compression program, also often used to express the gzip file format. The authors of the software are Jean-loup gailly and Mark Adler. October 31, 1992 the first public release, the version number is 0.1, the current stable version is 1.2.4. Gzip is primarily used for file compression on UNIX systems. We often use the fi

New Feature of DB210: adaptive compression

In the just-released DB2LUW10.1, a new compression technology-adaptive compression was introduced. This compression scheme is a mixture of table compression and page compression, that is, after a user's data table is compressed by a table-level dictionary, it is also compres

Compression Technology slimming SQL Server backup files

However, the volume is still very large. Therefore, in daily work, how to reduce the size of SQL Server backup files is a concern of many database administrators. Maybe Microsoft's database product design experts have heard the voices of many database administrators. In the latest MySQL 2008 database, the concept of backup compression is put forward. The basic principle is the same as using RAR and other compr

VIII. IO optimization (4) Data Compression

I. Overview 1. Why Data Compression? The performance of SQL Server depends mainly on the disk I/O efficiency. Improving the I/O efficiency means improving the performance of a program. SQL Server 2008 provides the data compression function to improve disk I/O. Data Compression reduces the disk usage of data. Therefore, data c

In-depth understanding of data compression and deduplication

[Guide]What are the differences between data compression and deduplication? In practice, how can we apply it correctly? I have not studied the principles and technologies of Data Compression before, so I did some homework, read and sort out relevant materials, and compared and analyzed the data deduplication technology. In the face of the rapid expansion of data, enterprises need to constantly purchase a l

HTTP compression implementation (IIS6) (translated from Microsoft Knowledge Base)

You can enable HTTP compression server-wide or on a specific directory. Http compression improves bandwidth utilization and speeds up Web site performance. In addition, you can compress static or dynamic responses. You can enable HTTP server-side compression to increase your bandwidth utilization and accelerate your website performance. In addition, you can als

ASP. NET page Compression

Introduction and application testing of several compression modules optimized by gzip for ASP. NET pages in real time! (Source Code)Before the introduction, let's talk about ASP. the role and working principle of the gzip compression module on the Net Server. Many people use a large number of JS special effects or place a large number of dynamic advertisements when writing a webpage, usually some

Compatibility test report for compression and decompression software in Windows 7 RC

Test background: May 5, 2009, Microsoft officially released the Windows 7 RC version. Unlike the beta version, the Windows 7 RC version is almost identical in many ways to a future release, so Windows 7 RC will be an important release for users who want to move their day-to-day operating systems to Windows 7. And in the RC version of the common software compatibility test also has practical significance. Because many people are ready for Windows 7, unknown software compatibility makes them proh

Multi-thread compression and Migration Technology in QEMU-KVM, qemu-kvm Multithreading

Multi-thread compression and Migration Technology in QEMU-KVM, qemu-kvm MultithreadingMulti-thread compression and Migration Technology in QEMU-KVM Guide Currently, the Migration technology is to directly write raw memory data to QEMUFILE to transfer virtual machines. In this case, a large amount of data is sent, this results in a higher migration time (total time) and a lower time (downtime )

C # Compression Components introduction and Getting Started

1. PrefaceAs the GIZHGA Rights management system as the earliest batch of learning users, learned a lot of things, in the group also made a lot of friends, more important is idle time, we have released a lot of reliable outsourcing work. This is also because Gizhga released a " compressed file corruption detection " outsourcing task, the earliest in the year in C # very simple use of the compression components, this time with this demand, only so in-

Knowledge about Video Compression Algorithms

Knowledge about Video Compression Algorithms MPEG-1 After MPEG video compression, three elements are included: I-frames, p-frames, and B-frames ). In the process of MPEG encoding, some video frame sequences are compressed into I frames, some are compressed into P frames, and some are compressed into B frames. The I-frame method is the intra-frame compression meth

Network most comprehensive Linux compression and decompression commands Daquan __linux

Network most comprehensive Linux compression and decompression commands DaquanDirectory Technology Article July 28, 2016 Compression and decompression commands, Linux is more commonly used in the command. Before the use of compression and decompression, are temporary online search, used after a period of time is useless to forget. Although the use of commands is

Talk about compression in Linux

Tags: compression options Description Parameter Description nbsp tar.gz no content bzip grep1. Use and technology for compression  1.1 Why compression is required:        ① you have a file is too large, resulting in the normal email can not be sent out (many emails have a capacity of about 25MB per letter limit Ah!). )?        ② have you ever had to back up some

Data compression first time job

1-1: One of the basic questions about data compression is "what are we going to compress" and how do you understand that?A: Data compression refers to the process of significantly reducing the amount of data required to represent a signal in the range of non-loss of information and distortion tolerance, using methods such as changing sampling rate, predictive coding, and transformation coding. In the transm

Using ASP.net to realize online compression and decompression of files

sender, System.EventArgs e){String Fullname=this. File1.postedfile.filename;//c:\test\a.zipExtract FilesAttachmentunzip.upzip (FullName);string[] fileproperties = new string[2];Fileproperties[0] = fullname;//files to be extractedFILEPROPERTIES[1] = System.IO.Path.GetDirectoryName (fullName);//The target directory after decompressionUnzipclass unzc=new Unzipclass ();Unzc.unzip (fileproperties);String dir = System.IO.Path.GetDirectoryName (fullName);String fileName = System.IO.Path.GetFileName (f

Zip compression principle and implementation (3)

After the phrase compression is completed, gzip will be transferred to the simplified compression stage. The implementation at this stage is very complicated and is crucial to the final compression rate. I will explain the gzip practice in detail. Gzip is one of the most famous open-source lossless compression programs

Detailed description of scattered algorithms data compression algorithms (II)

In-depth parsing of Data Compression Algorithms Preface Before starting this article, let's review the previous article. The previous article explains two types of data compression algorithms: The Huffman compression algorithm and the RLE compression algorithm. Data Compression

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