What is a command file? Command extension? Ask the great god for guidance! ! !

What do you mean, is it a bat command file or PRG command extension, or what command file?

Universal file suffix

. ACA: Role documents used by Microsoft agents.

. Acf: system management configuration

. Acm: Audio compression management driver, which provides coding and decoding functions of various sound formats for Windows system.

. Aif: sound file, supports compression, and can be played with Windows Media Player and QuickTime Player.

. AIF: audio file, played with Windows Media Player.

. AIFC: audio file, played with Windows Media Player.

. AIFF: audio file, played with Windows Media Player.

. Ani: file extension of animation cursor, such as animation hourglass.

. Ans:ASCII character graphic animation file

. Arc: earlier compressed files can be opened with WinZip, WinRAR, PKARC and other software.

. Arj: compressed files. You can use WinZip, WinRAR, PKARC and other software to open it.

. Asf: The video stream supported by Microsoft Media Player can be played on Windows Media Player.

. Asp: Microsoft's video streaming file, which can be opened with Windows Media Player.

. Asp: Microsoft's Active Server Page is a server-side script, which is often used for large-scale website development and supports database connection, similar to PHP. It can be written in Visual InterDev, which is a hot topic at present.

. Asx: a shortcut to Windows Media media files.

. Au: It is a common sound file format on the Internet, which is mostly created by Sun Workstation and can be played by using waveform maintenance and modification software. LiveAudio in Netscape Navigator can also be played. Au file.

. Avi: A Windows multimedia file format using Microsoft RIFF specification, which is used to store sound and animation.

. Bak: A backup file, usually an auxiliary file created automatically or through a command, contains the latest version of the file and has the same file name as the file.

Bas Basic: language source program file, which can be compiled into executable file. At present, the system is developed by Visual Basic.

. Bat: batch file. In MS-DOS. Bat file is an executable file composed of a series of commands, which may contain calls to other programs.

. Bbs: the article information file of bulletin board system system.

. Bfc:Windows briefcase file.

. Bin: a binary file whose purpose depends on the system or application.

. Bmp:Bitmap bitmap file, a self-format of Paint developed by Microsoft, can be supported by various Windows and Windows NT platforms and many applications, and supports 32-bit colors. This is a resource file format for creating icons for the Windows interface.

C: C language source program files, compiled and used under the C language compiler.

. Cab: The compressed package format developed by Microsoft is often used for software installation. Extract.exe can decompress with the utility program that comes with Windows. WinZip, WinRAR and so on all support this format.

. CAL: Calendar file in Windows.

. Channel file.

. CDR: A graphic file format in CorelDraw, which is a graphic image file format that can be used in all CorelDRAW applications.

. Cdx: index file, which exists in the software environment of dbase, FoxBase and FoxPro systems.

. Configuration file, a file used by a system or application software to configure its own functions and characteristics.

. Chm: Compiled HTML file, which is often used to make help files and electronic documents.

. CLP: The file format in the clipboard under CLP:Windows.

. Cmd: The batch file of Windows NT/2000 actually has the same function as the BAT file, but it is different from the BAT file under DOS/Windows 9x.

Cmf: sound card standard music file, FM synthesizer, etc. Can be played back.

. CNF:net meeting conference connection file

. Cnt: What is the online help file? Reference files are usually saved in. Hlp file with the same name.

. Col: a palette file format created by Autodesk Animator, Autodesk Animator Por and other programs, which stores RGB values of each item in the palette.

. Com:DOS executable command file, generally less than 64KB.

. CPL: Control panel extension file used by Windows operating system.

. CPP:c++ language source program, a very powerful language, with corresponding development systems on various platforms.

. Crd: card file in windows

. Crt: Certificate authentication document for security.

Cur: Cur: Cursor resource file format cur:cur:Windows, which can be edited by cursor editing software.

. CSS: text /CSS files

. Dat: a data file used in an application.

. DAT: Image and sound files in VCD can be called by VCD playback software or played by VCD player.

. Dbf: Database file, which is generated by database processing systems such as Foxbase, Dbase and Visual FoxPro.

. Dcx: Browse document files by fax

. Ddi: image file, which can extend tools such as dup, HD and img.

. Development: device driver

Dib: Device-independent bitmap file, which is a file format to ensure that bitmap graphics created by one application can be loaded or displayed by other applications.

. Directory: Directory file

. DLL:Windows dynamic link library is almost everywhere, but sometimes the conflict between different versions of DLL will cause various problems.

. Doc: It is a document created by Word, the word processing software in Microsoft Office with the highest market share at present.

. Dos: Some MS-DOS system files reserved by Windows.

. Dot: document template file dot:Microsoft Word, which can simplify the creation of some commonly used documents and can be embedded in VBA programs to realize some automation functions.

. Drv: Device driver file used in various systems.

. Dwg:AutoCAD drawing file, which is also a format supported by many drawing software, is often used for data sharing.

. Dxb: Graphic file format created by AutoCAD.

. Dxf: Graphic exchange format is a computer-aided design file format, which was originally developed for AutoCAD to facilitate the transfer of graphic files between applications. It stores graphics in ASCII mode and represents the size of graphics very accurately.

. Der: authentication document

Dic:Txt file

. Emf: Windows 32-bit extended metafile format developed by Microsoft. Its overall design goal is to make up for the shortcomings of *. The wmf file format used in Microsoft windows 3.1(win16) makes metafiles easier to use.

. Eps: The graphic file format described in PostScript language is saved as a text file. It can print high-quality graphic images on a PostScript graphic printer, and can represent graphic images up to 32 bits.

. Err: compilation error file exists in Dbase, Foxbase and Foxpro series software environment.

Exe: Executable files have the same suffix, but different formats and versions.

. The graphics card driver used by 3DS.

. Exc:Txt file

. FLC: animation files of Autodesk Animator and Animatorpro, supporting 256 colors. The maximum image line is 64000*64000, which supports compression. It is widely used in animation graphics, computer-aided design and animation sequences in computer game applications.

. Fnd: Saved search results

. Fon: dot matrix font file

. For:Fortran language program

. Shortcut keys for fonts.

. Fp: Configuration file, which exists in the environment of Dbase, FoxBase and FoxPro series software.

. Fpt: Remarks field file, which exists in the environment of dbase, FoxBase and FoxPro series software.

. Frt: report file exists in the environment of dbase, FoxBase and FoxPro series software.

. Frx: report file, which exists in the environment of dbase, FoxBase and FoxPro series software.

Fxp: the compiled program exists in the environment of dbase, FoxBase and FoxPro series software.

. Gif: A compressed graphics file format that can be processed by various graphics processing software on various platforms.

. Grh: the image typesetting file of Founder Company.

. Grp: a group window file generated by the program manager under Windows.

. goc:Gocserve

. gra:MSGraph。 Chart 5

. H: c source program header file

. Hlp:Windows application help file

. Hqx: BinHex is used in Macintosh to encode binary files into 7-bit text files. Most Macintosh files appear as. hqx(。 Bin is rarely used). In Macintosh, StuffIt Expander can be used for decoding. Hqx, and in Windows, BinHex 13 can be used for decoding.

. Ht: HyperTerminal

. Htm: save a text file in hypertext description language to describe various web pages and open it in various browsers.

. Html: same. Htm file.

. Icm: Image Color Matching Profile

. Ico: Icon file ico:Windows, which can contain multiple formats of the same icon and is created by icon editing software.

. Idf:MIDI instrument definition

. Idx: index file exists in the environment of dbase, FoxBase and FoxPro series software.

. Iff: file exchange format file, mostly used in Amiga platform, on which almost all kinds of data can be stored. On other platforms, IFF file format is mainly used to store image and sound files.

. Image: MAcintosh disk image file, which is common in the FTP site of Apple computer, has been heat shrunk and packaged in Macintosh.

. Ime: ime: input method file under windows.

. Img: disk image file, which can be restored to disk after being opened with tools such as HD-copy and WinImage.

. Inc: Assembly language contains files, similar to. H file in C/C++.

. INF: Software installation information under INF:Windows. Standard installer inf:Windows installs software and drivers according to the installation information in this file.

. Ini: Initialization information file ini:Windows, not used much. The new application will save the settings in the system registry.

. Jar: compressed file, a new version of ARJ, but not very popular, you can open it with WinJar, Winrar, etc.

. Jpeg: A compressed image file, and. jpg。

. Jpg: The still image compression standard developed by the still image expert group has a high compression ratio and is widely used. It can be created by image processing software such as PhotoShop.

. LNK: Shortcut. This file points to another file. Each item in the program folder of the Start menu is an lnk file.

. Log: a log file, usually used to record some events and so on.

. Lzh: An ancient compressed file that can be opened with WinRAR.

. Mac: The medium gray graphic file format used by Macintosh, which is used for Macintosh brushes, and the resolution can only be 720*567.

. Mag: graphic file format

. MDB: The database format used by Microsoft Access is a very popular desktop database.

. Men: memory application files exist in the environment of dbase, FoxBase and FoxPro series software.

. Mid: Audio compressed files used to be popular, but now the software is rarely used.

. Mif :MIDI musical instrument

. Mov: Apple movie files in Quicktime format can be played by Sparkle, FastPlayer, MoviePlayer and other software in Macintosh, and can be played in QuickTime in Windows.

Movie: movie format movie: QuickTime or Mac, which can be played by Sparkle, FastPlayer, MoviePlayer and other software in Macintosh, and can be played by QuickTime in Windows.

.mp3: Audio files compressed by MPEG-1Layout3 standard are the main compressed audio files on the Internet. Because of its high compression ratio and low distortion, this file has become the main file format of music piracy at present, but it is currently challenged by new standards such as VQF and WMA.

. Mpg:MPEG- 1 standard compressed video files are very similar to those used in VCD, providing CD-level audio signals and video resolution of 320*240. At present, most media playback software can play them, and Microsoft's WMV8 and MPEG-4 compressed AVI files are its strong competitors.

. MPT: Graphic file format used in Macintosh.

. Mail: Microsoft mail document

. object code

. Ovl: Due to the multi-function of the software and small memory, there may be ovl files with the same file name in the executable file, which cannot be transferred into memory at one time.

. Pcd: Bitmap file, developed by Eastman Kodak Company, supported by all platforms. PCD supports 24-bit color, and the largest image line is 2048*3072, which is used to save the pictures on the CD.

. Pcs: animation file is an animation file format developed by Macromedia. For Macintosh applications, support compression, support 256 colors, and save animation data. It is the predecessor of Aauto Quicker.

. Pcx: Image file. PCX format is an image processing software developed by ZSOFT Company. It is a compressed format and occupies less disk space.

. Pdf: graphic multimedia file, the file format of electronic printed matter defined by Adobe, is the de facto standard. Many electronic printed materials on the Internet are free. Pdf format.

Psd: It is a standard graphic file format used in PhotoShop, which can save every tiny part of image data, including layers, additional mask channels and so on.

. Password file under Windows.

. Qt :Machintosh's Quicktime video format, which can be played by Sparkle, FastPlayer, MoviePlayer and other software in Macintosh, and can be played by QuickTime in Windows.

. Qtm: animation file. This file format was developed by Apple Computer Company and supported by Apple Macintosh and Microsoft Windows platforms. It supports 25-bit color and the maximum image resolution is 64000 * 64000. It supports compression and is used to save audio and sports video information.

. Rec: Recorder macro file under rec:Windows.

. REG :Windows 95/98 system and application registration file. Although this file is saved as a plain text file, it still has version problems. Different operating systems use different versions of reg files.

Rle: A compressed bitmap file format. RLE compression scheme is an extremely mature compression scheme, which is characterized by lossless compression and saves disk space without losing any image data. However, it takes more time to open this compressed file, and some applications with poor compatibility may not be able to open it.

. Compressed video files supported by RealPlayer under Windows are very popular streaming video files on the Internet, and many real-time video news adopt this format. However, the latest Windows Media Video V8 has launched a powerful offensive against it.

. Rmi :MIDI sequence file

. Rtf: rich text format file, which describes the content in plain text, can save various format information, and can be created by compiling version, Word, etc.

. Sav: archive file

. Scp: A script file for automatic dial-up login of Internet dial-up users under Windows system, which can avoid tedious keyboard input when logging in manually.

Scr: barrier protection document

. Sct: screen file

. Scx: screen file

. Set :Microsoft backup set file, which is used to save information such as contents and settings to be backed up.

. Shb: Shortcuts to documents.

. Snd :Mac sound file, a sound file format developed by Apple Computer Company, is supported by Macintosh platform and various Macintosh applications, and supports partial compression.

. Sql: Query files, which are used in the environment of dbase, FoxBase and FoxPro series software.

. Svg :SVG can be regarded as the hottest image file format at present. It is developed by WorldWideWebConsortium based on XML, and SVG is a scalable vector graphic.

. Svx :Amiga sound file, a sound file format developed by Commodore, is supported by the Amiga platform and applications, and does not support compression.

. Swf :flash is a product of micro media company. Strictly speaking, it is an animation editing software. In fact, it generates an animation with a suffix. Sovereign wealth fund. This format of animation can express rich multimedia forms in a relatively small volume, and can also achieve a state of "harmony" with HTML files.

. Swg: Virtual memory swap file, used by the operating system.

. Sys: system files, drivers, etc. There are different definitions in different operating systems.

. Tbk: temporary database file, used in the environment of dbase, FoxBase and FoxPro series software.

. Tga: Image file, with simple structure, belongs to the general format of graphic image data and has great influence in the multimedia field. This is the preferred format for converting computer-generated images into TV images.

. Tiff: Image file, with complex format, many storage contents and large storage space. Its size is three times that of GIF image and 10 times that of JPEG image. It was first popular on Macintosh, and now it is also supported by mainstream image applications in Windows.

. Tmp: Temporary files are generally temporary files generated by systems and applications. When the system and applications quit, the temporary files they created will be automatically deleted. If they exit abnormally, temporary files may remain on disk. In a single-task system, they can be deleted immediately. In a multitasking system, those temporary files that are not used should be deleted.

. Txt: text file

. URL: internet shortcut (shortcut to URL address on the internet)

. Vcd: A CD image file made with virtual cd tools.

. Ver: version description, a file used to describe the version information of a software, the content varies from software to software.

Sound file. Developed by Creative Labs, this file format supports Windows and DOS platforms and supports compression.

Vxd: Virtual device driver, which is very common in Windows operating system, is an important system file.

. Wab: address book file, used by the address book program in the system.

. Audio files. This file format is a resource format for saving audio information on Windows. In Windows, it is played by waveform maintenance and modification or navigator or "media player". There are many encoding methods, which need corresponding decoding programs to play.

. Win: window file, used in the environment of dbase, FoxBase and FoxPro series software.

. Wmf: A universal metafile format in Microsoft Windows. It has the characteristics of short file and modeling mode. The whole graphics are often spliced by independent components, but their graphics are often rough and can only be edited in Microsoft Office.

. Wpc: wordpad document conversion

. Wps:Wps text file, with multiple versions, which can be opened with Wps Office, Wps 2000, etc.

. Wri :Windows wordpad document

. Xab: Microsoft mail address book

. Xbm: a graphic file format created by xbm :Animator Pro, which contains information used to describe a series of points of a polygon.

. Zip: It is the most common file compression format in DOS/Windows and the standard compression format on the Internet, which can contain paths and multiple files.