A CMD file is a file with a filename ending with .cmd or .CMD. It may specifically refer to a batch file in Microsoft Windows a CMD file CP M in CP M 86 architecture a REXX file in OS 2 disambiguation ... more details
Orphan date October 2008 In computer computing , a file signature is data used for identify or verify the content of a file. In particular, it may refer to File format Magic number File magic number bytes within a file used to identify the format of the file generally a short sequence of bytes most are 2 4 bytes long placed at the beginning of the file Checksum File checksum or more generally the result of an hash function over the file content data used to verify that the file content integrity, generally against transmission errors or malicious attacks. The signature can be included at the end of the file or in a separate file. See also List of file signatures Signature file Virus signature External links http www.garykessler.net library file sigs.html List of file signatures http www.filesignatures.net Public Database of File Signatures Category Files ... more details
Bitmap file may be a generic term for File format for storing raster graphics Computer file containing a raster graphics image Bitmap file may also refer to Windows bitmap , or BMP, a particular graphics file format disambig ... more details
SCM file may refer to A StarCraft map file A lotus ScreenCam Screencast file An XML schema file A SCM Scheme implementation Scheme source file disambig Long comment to avoid being listed on short pages ... more details
FIL file may refer to In Audit Command Language ACL , a Table Data file. In Application Generator , a File Template. In dBASE Application Generator, a Files List Object file. In Mirror computing , a file containing a saved File Allocation Table FAT , created by some DOS mirror programs. An Overlay programming file. A Symbian Application Logo File, containing bitmap images used for application icons. disambig Category Computer file formats ... more details
For information on computer file types , see File format For information relating to specific operating systems, see also Apple Computer Apple file types Macintosh OSType s Uniform type identifier Unix file types Windows file types For a list of filename extensions, see list of file formats list of file formats alphabetical For information on related concepts, see also file system extended attribute s disambig ... more details
File exchange can refer to File eXchange Protocol , a protocol for remotely connecting two computers. File hosting service One click hosting File exchange service sites for exchanging files that are too large for email attachments. disambig ... more details
lowercase tt file tt is a standard Unix computer program program for recognizing the type of data contained in a computer file using Magic number programming magic numbers . History The original version of file originated in Unix Research Version 4 ref See http www.darwinsys.com filefile v4.1.txt this copy ... changes, most notably moving the file type information into an external text file rather than compiling ... private CVS repository see http www.darwinsys.com file file.c.log.txt the log of the main program ... of tests are performed on the file specified on the command line if the file cannot be read, its status undetermined, or its type undetermined, tt file tt will indicate that the file was processed and its type was undetermined. tt file tt must be able to determine the types folder computing directory , named pipe FIFO , Unix domain socket socket , block device file special file , and character special file zero length files are identified as such an initial part of file is considered and tt file tt is to use position sensitive tests the entire file is considered and tt file tt is to use context sensitive tests the file is identified as a tt data tt file tt file tt s position sensitive tests are normally implemented by matching various locations within the file against a textual database ... methods such as file extension s and schemes like MIME . In most implementations, the tt file tt command uses a database to drive the probing of the lead bytes. That database is implemented in a file called tt magic tt , whose location is usually in tt etc magic tt , tt usr share file magic tt or a similar location. Usage The SUS mandates the following options tt M file tt , specify a file specially ... sensitive tests will not be performed tt m file tt , as for tt M tt , but default tests will be performed after the tests contained in tt file tt . tt d tt , perform default position sensitive and context sensitive tests to the given file this is the default behaviour unless tt M tt or tt m tt is specified ... more details
A dot file is generally any file whose name begins with a full stop . In Unix like operating systems, dot file is synonymous with Hidden file and hidden directory hidden file . As a special case, dot files whose names begin with code . code can be suspected as being AppleDouble companions of an ordinary file in the same directory. In Classic Mac OS , there was a recommendation Citation needed date September 2009 that dot filenames were reserved for device driver s. Category Operating systems ... more details
orphan date September 2008 A pattern file is a computer file containing information which allows compatible antivirus software to identify viruses. References http www.trendmicro.com.au consumer security info what pattern.php Category Computer file systems computer stub ... more details
unreferenced date October 2008 A file attribute is metadata that describes or is associated with a computer file . For example, an operating system often keeps track of the calendar date date a file was created and last modified, as well as the file s size and file extension extension and what computer application application to open it with . FileFile system permissions permission s are also kept track of. The user computing user may attach other attributes themselves, such as comments or color labels, as in Apple Computer s Mac OS X version 10.3 or later . Editing File Attributes DOS Windows File Attributes In DOS , OS 2 and Microsoft Windows the attrib command computing command can be used to change and display file attributes. For details, refer to attrib . Linux File Attributes On Linux and some Unix like operating system, the Chattr command computing command can be used to change and display file attributes. See also Extended file attributes External links http www.pcmag.com encyclopedia term 0,2542,t DOS Attrib&i 41730,00.asp Definition of DOS Attrib PC Magazine http www.computerhope.com attribhl.htm Microsoft DOS attrib command http web.archive.org web 20071017224738 http bellevuelinux.org hidden file.html Hidden files in Unix like operating systems via archive.org DEFAULTSORT File Attribute Category Computer file systems compu storage stub da Filegenskaber de Dateiattribut ko pl Atrybut pliku uk zh ... more details
primary sources date September 2011 Infobox Software name GNOME title File Roller logo Image File roller.svg screenshot Image File roller 2.32.1 displaying the contents of an archive of itself.png 250px caption File Roller running on Ubuntu operating system Ubuntu 10.10 frequently updated Don t edit dates are taken from GNOME release info developer Paolo Bacchilega programming language C programming language C operating system Unix like genre File archiver license GNU General Public License GNU GPL website http fileroller.sourceforge.net fileroller.sf.net File Roller is the archive manager of the GNOME desktop environment . Features File Roller Archive Manager can Create and modify archives. View the content of an archive. View a file contained in the archive. Extract files from the archive. File Formats File Roller supports the following file formats Note Backend programs are needed. File Roller is only a frontend. ref name features http fileroller.sourceforge.net features.html File Roller is only a graphical interface to archiving utilities ref 7z .7z Ar Unix ar .ar ARJ .arj gzip .tar.gz ..., .dll lzip .tar.lz , .tlz Lempel Ziv Oberhumer LZO .tar.lzo , .tzo JAR file format JAR archives .jar , .ear , .war LHA file format LHA archives .lzh RAR archives .rar StuffIt archives .bin, .sit tar file format tar ZIP file format ZIP archives .zip Zoo file format Zoo archives .zoo Single files compressed with gzip, bzip, bzip2, compress, lzip, LZO ISO image s .iso read only Deb file format DEB ... Comparison of file archivers References reflist External links official http fileroller.sourceforge.net http library.gnome.org users file roller Manuals http ftp.gnome.org pub GNOME sources file ... compression software Category Free software programmed in C ar ast File Roller de File Roller es File Roller fr File Roller ko it File Roller nl File Roller ja File Roller pl File Roller pt File Roller ru File Roller ... more details
Unreferenced stub auto yes date December 2009 File transfer is a generic term for the act of transmission telecommunications transmitting file computing file s over a computer network like the Internet . There are numerous ways and Protocol computing protocols to transfer files over a network. Computers which provide a file transfer service are often called file server s. Depending on the client computing client s perspective the data transfer is called uploading and downloading uploading or downloading . File transfer for the enterprise now increasingly is done with Managed file transfer . There are 2 types of file transfers Pull technology Pull based file transfers where the receiver initiates a file transmission request Push technology Push based file transfers where the sender initiates a file transmission request. File transfer can take place over a variety of levels network transparency Transparent file transfers over Distributed file system network file systems Explicit file transfers from dedicated file transfer services like File Transfer Protocol FTP or Hypertext Transfer Protocol HTTP Distributed file transfers over peer to peer networks like BitTorrent protocol Bittorent ... 6.2 peer to peer file transfer programs such as CA, Inc. s XCOM Data Transport File transfers over instant messaging or LAN messenger File transfers between computer s and peripheral device s File transfers ... . Protocols A file transfer protocol is a convention that describes how to transfer files between two computing endpoints. They are meant solely to send the stream of bit s stored as a single unit in a file system , plus any relevant metadata such as the filename , file size and timestamp . File transfer ..., and ZMODEM typically operate across RS 232 serial connections. See also List of file transfer protocols File sharing USB flash drive Security threats DEFAULTSORT File Transfer Category Internet terminology Category Network file transfer protocols Compu network stub es Transferencia de archivos ... more details
A system file is a computer file important to the operating system . More specifically, it may refer to code .sys code a Microsoft Windows file extension for system related files The System suitcase on Mac OS Any file marked with a system attribute computing attribute sys is the root directory of the Linux file system sysfs disambig Category Files el ko ru ... more details
Refimprove date October 2006 Image Expander.png thumb right A save as file dialog from GTK . The file browser is hidden inside a disclosure widget . In computing, a file dialog also called File Selector Chooser, file requester, or open and save dialog is a dialog box that allows users to choose a Computer filefile from the file system . File dialogs differ from file manager s as they are not intended for file management although some offer simple operations such as directory file systems folder creation , rather they are intended for the opening and saving of files. Before file dialogs, most programs requested files as a command line argument or as an exact file path. Others required users to select a file from the file manager. Types There are several types of file dialogs. The two most common being a two column view file dialog and a mini file browser dialog. Others include thumbnail view .... Many GUI toolkits do not provide a file dialog, so an application is forced to use its own. Two column view The two column view is one of the primary file dialog types. It uses two columns. One for folders ... and buttons for basic file manipulation. Mini file manager A mini file manager is often used. It represents the normal file manager, but it is restricted in its operations. Thumbnails Usually used by image related applications, a gallery of files are shown which allow a file to be chosen graphically. Usability File dialogs have been a subject of much usability debate. As a GUI widget widget receiving constant use, ease of use is a major factor in their design. The most common reasons for file dialog usability problems include File system limitations, Wrong type of dialog for the application ... file dialogs , Uses non standard terminology Commonly in ports from other operating systems Many application ... newer, more usable file dialogs. Powerbox A file powerbox is a file dialog that will dynamically grant the application that opened it the right to access the file that the user chooses. This means that an application ... more details
wiktionarypar single file Single File band has been deleted by consensus. Please do not add it here. Single file may refer to The Single File , a 1983 collection of music videos by Kate Bush and a 1984 vinyl boxed set containing all Kate Bush s 7 singles and their b sides up until that point Single File , a song by Elliott Smith from his 1995 album Elliott Smith album Elliott Smith Single File album , debut album by Chicago based punk rock band The Honor System Single File band , is an Indie Pop Rock band based in Denver, Colorado the band was signed to Reprise Records in 2006. Singlefile Estate is a producer of premium fine wines from the Denmark region of Western Australia File dynamics Single file and single file dynamics the occurrence and motion of particles in a channel disambig ... more details
lowercase apt file Infobox Software name apt file logo screenshot caption developer Sebastien J. Gross latest release version 2.4.0 latest release date latest preview version latest preview date operating system Cross platform platform Debian and its derivatives programming language Perl genre Package management system license GNU General Public License website apt file is a command in the Advanced Packaging Tool family that allows you to find which package includes a specific file. Additionally apt file can be used to list all files included in a package without installing or downloading it. Usage Once installed, apt file needs to have its database created with the command as root apt file update This command attempts to fetch the Contents ARCH .gz files from the remote sources that are specified in etc apt sources.list. Once this is done, the database can be queried for a list of packages that contain a file, with or without the path specified apt file search filename apt file search path to filename To list the contents of an uninstalled package apt file list packagename References unreferenced date March 2012 reflist External links http www.debian.org doc manuals apt howto ch search.en.html s apt file Apt HOWTO How to discover to which package a file belongs Category Computer networking ... more details
Unreferenced date May 2011 An archive file is a file that is composed of one or more files along with metadata that can include source volume and medium information, file directory structure, error detection and recovery information, file comments, and usually employs some form of lossless compression . Archive files may be encryption encrypted in part or as a whole. Archive files are used to collect multiple data files together into a single file for easier portability and storage, or simply to compress files to use less storage space. Computer archive files are created by file archiver software, optical disc authoring software , or disk image software that uses an archive format determined by that software. The file extension or file header of the archive file are indicators of the file format used. Archive files are sometimes accompanied by separate parity archive PAR files that allow for additional error detection and recovery, particularly in recovery of missing files in a multi file archive. In operating systems that distinguish different file types by filename extension s, archive extensions include tt . ZIP file format zip , . rar , . 7z , and . tar file format tar , tt of these examples, tt .tar tt is the only non compressed format . Java also introduced a whole family of archive extensions such as . JAR file format tt jar tt and . WAR file format tt war tt j is was Java and w is for web . They are used to exchange entire byte code deployment. Sometimes they are also used to exchange source codes and other text html xml files. By default they are all compressed. See also File archiver Archive format Disk image Optical disc image Archive formats Category Files Category Computer archives Compsci stub ca Arxiu inform tic cs Archivn soubory fr Archive informatique ko it File archivio ru uk ... more details
Unreferenced date January 2007 Orphan date September 2008 File grooming , in the context of computer file systems , is the act of rearranging files. Commonly, this is moving files to directories with names reflecting their contents. This act can also refer to the deletion of no longer relevant files, previous versions of programs or backup archive s, temporary files and defragmentation . This has the effect of freeing up disk space and improving disk performance. Methodology Many different means of file structure exist, and without a set standard for any platform, many of them are used in mainstream computing. Dot separation, popularized mainly by Linux and Unix operating systems, involves separating relevant information about a file with a period. For example, 24.S06E01.DVDRip.XviD.avi means that this file is a DVD rip of episode 1 of season 6 of the show 24 TV series 24 using the Xvid codec. This is an expansion of a file extension, which is normally placed after a period on the end of a file. See also Code Grooming DEFAULTSORT File Grooming Category Computer file systems Computer stub ... more details
File Spanning is a term used to describe the ability to package a single file or data stream into separate files of a specified size. It also implies the ability to re combine the package files back into the original file or data stream. This is useful when saving large files onto smaller volumes or breaking large files up into smaller files for network messages of limited size email, newsgroups . It also allows the creation of parity file s such as parity archive PAR to verify and restore missing or corrupted package files. Sometimes the file spanning process is hidden as a secondary operation such as with file archivers . In this case, many smaller files are first packaged into a data stream and then repackaged into a multi file archive. File Spanning Software Hundreds or thousands of file spanning utilities are available for nearly every OS and platform. Below are a few examples PKZip WinZip RAR WinRAR PAR Parchive Category Storage software ... more details
Unreferenced stub auto yes date December 2009 In the realm of computer file management, file copying is the creation of a new computer filefile which has the same content as an existing file. All computer operating system s include file copying provisions in the user interface, like the command, cp Unix cp in Unix and copy command copy in MS DOS operating systems with a graphical user interface , or GUI , usually provide copy and paste or drag and drop methods of file copying. File manager applications, too, provide an easy way of copying files. Internally, however, while some systems have specialized Application programming interface application programming interfaces API s for copying files like CopyFile and CopyFileEx in Windows API , others like Unix and MS DOS fall back to simply reading the contents of the old file and writing it to the new file. This makes little difference with local files those on the computer s hard drive , but provides an interesting situation when both the source and target files are located on a remote file server . Operating systems with specialized file copying APIs are usually able to tell the server to perform the copying locally, without sending file contents over the network, thus greatly improving performance. Those systems that have no comparable APIs, however, have to read the file contents over the network, and then send them back again, over the network. Sometimes, remote file copying is performed with a specialized command, like ncopy in MS DOS clients for Novell NetWare . An even more complicated situation arises when one needs to copy files between two remote servers. The simple way is to read data from one server, and then to write the data to the second server. See also Soft copy Hard copy DEFAULTSORT File Copying Category Computer file systems Category Copyright law Operating system stub ko kk ... more details
E file may refer to Canadian efile , an electronic tax filing system of Canada Revenue Agency for professional tax preparers E file, or electronic court filing , a system for automated transmission of legal documents e file.lu , a website for communication between financial institutions and regulators in Luxembourg E FILE, a trademark filed by Sony Corporation in 1986 IRS e file , an electronic tax filing system of the United States Internal Revenue Service See also Electronic tax filing disambiguation disambig ... more details
notability date August 2010 Infobox Software name File Commander logo caption Screenshot of File Commander screenshot Image fcw.png 250px developer Brian Havard latest release version 2.40 latest release date 3. March 2011 operating system Microsoft Windows , OS 2 , Linux , FreeBSD , OpenSolaris genre File manager license Shareware website http silk.apana.org.au fc.html silk.apana.org.au fc.html File Commander is a text user interface text mode orthodox file manager for Microsoft Windows , OS 2 and Linux operating systems created and maintained by Brian Havard . It is a enhanced clone computer science clone of Norton Commander , originally developed for OS 2 but later 1997 ported to Microsoft Windows and in 2011 to Linux platforms. Development started in 1993 and that makes File Commander one of the few surviving text interface mode orthodox file manager younger than DN and Volkov Commander, but older that FAR, which was released in 1997 . Functionality was extended with such features as support of regular expressions in file selection, powerful editor is undo redo capabilities, etc. In 1998 the OS 2 version was selected as The Best Disk File Utility for OS 2 by the independent http www.os2ezine.com v4n1 rcautil.htm OS 2 e Zine magazine . Current version 2.40 is also available for various Unix like operating systems including FreeBSD and OpenSolaris . See also Comparison of file managers External links http silk.apana.org.au fc.html The official site of File Commander http www.softpanorama.org OFM Paradigm Ch05 file commander.shtml The Orthodox File Manager OFM Paradigm, description of File Commander http www.os2ezine.com v4n1 rcautil.htm OS 2 e Zine 1998 Reader s choice for Disk File Utilities Category Windows software Category OS 2 software Category Orthodox file managers Category Shareware windows software stub de File Commander ... more details
mergefrom Network file management date August 2009 In computing , file virtualization is a field of storage virtualization operating on computer file level. It involves uniting multiple storage devices into a single logical pool of files. It is a vital part of both file area network FAN and network file management NFM concepts. As with most other virtualization designs, a primary driver behind file virtualization is the desire to shield users and administrators from the complexity of the underlying storage environment. Other goals include simplified management, more efficient capacity usage and allocation, and reduced management costs ref http www.callcentermagazine.com shared article showArticle.jhtml?articleId 10300147 ICMI Storage Virtualization Bot generated title ref . External links http findarticles.com p articles mi m0BRZ is 11 24 ai n9525315 Network file virtualization http www.callcentermagazine.com shared article showArticle.jhtml?articleId 10300147 Storage virtualization http www.internetnews.com storage article.php 3621421 File Virtualization Heats Up on InternetNews.com See also File area network FAN Network file management NFM Notes references Category Computer file systems Category Storage virtualization ... more details
There are several different technologies that use the term file shadowing , but the intent of file shadowing within these technologies is to provide an exact copy or Mirror computing mirror of a set of data . For file shadowing to be effective, the shadow needs to exist in a separate physical location than the original data. Depending on the Mirror computing Reasons reasons behind the shadow operation, this location may be as close as a second harddrive in the same chassis or as far away as the other side of the globe. References http www.freepatentsonline.com 5043876.html N level file shadowing and recovery in a shared file system , United States Patent 5043876 http www.freepatentsonline.com 5276871.html Method of file shadowing among peer systems , United States Patent 5276871 http www.ibexpert.info documentation 20 209. 20IBExpert 20Services 20Menu 20 202. 20Restore 20Database 20 201. 20Database 20Shadow 20Files 15713.html Database Shadow Files External links http www.gnu.org software emacs manual html node File Shadowing.html Instructions on how to shadow files for Emacs Category Computer file systems compu storage stub ... more details
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