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File Systems

Dictionary of File Types Starting with C and D
A file format/ extension / type is a particular way that information is encoded for storage in a computer file. And each of them have unique specification so we provided these informat for you.
FILE EXTENSIONS STARTING WITH C
- C code
- CAB Microsoft cabinet file (program files compressed for software distribution)
- CAL Calendar schedule data
- CAL CALS Compressed Bitmap
- CAS Comma-delimited ASCII file
- CAT IntelliCharge categorization file used by Quicken
- CB Microsoft clean boot file
- CCB Visual Basic Animated Button configuration
- CCF Multimedia Viewer configuration file used in OS/2
- CCH Corel Chart
- CCM Lotus CC:Mail "box" (for example, INBOX.CCM)
- CDA CD Audio Track
- CDF Microsoft Channel Definition Format file
- CDI Phillips Compact Disk Interactive format
- CDR Core Draw drawing
- CDT Corel Draw template
- CDX Corel Draw compressed drawing
- CEL CIMFast Event Language file
- CFB Comptons Multimedia file
- CFG Configuration file
- CGI Common Gateway Interface script file
- CGM Computer Graphics Metafile
- CH OS/2 configuration file
- CHK File fragments saved by Windows Disk Defragmenter or ScanDisk
- CHP Ventura Publisher chapter
- CIL Clip Gallery download package
- CIM Sim City 200 file
- CIN OS/2 change control file that tracks changes to an INI file
- CK1 iD/Apogee Commander Keen 1 data file
- CK2 iD/Apogee Commander Keen 2 data file
- CK3 iD/Apogee Commander Keen 3 data file
- CK4 iD/Apogee Commander Keen 4 data file
- CK5 iD/Apogee Commander Keen 5 data file
- CK6 iD/Apogee Commander Keen 6 data file
- CLASS Java class
- CLP Windows Clipboard file
- CLS Visual Basic Class Module
- CMD Command file for Windows NT (similar to a DOS .BAT file)
- CMD dBase-II program file
- CMD DOS CP/M command file
- CMF Corel Metafile
- CMP Address document
- CMP JPEG Bitmap
- CMV Corel Move animation
- CMX Corel Presentation Exchange image
- CNF Configuration file used by Telnet, Windows, and other applications
- CNM Windows application menu options and setup file
- CNQ Compuworks Design Shop file
- CNT Windows (or other) system content files for the help index and other purposes
- COB trueSpace2 object
- COD Microsoft C compiler output as displayable assembler with original C as comments
- COM Command file (program)
- CPD Fax Cover document
- CPE Fax Cover document
- CPI Microsoft MS-DOS code page information file
- CPL Control Panel extension
- CPL Corel colour palette
- CPP C++ code
- CPR Corel Presents Presentation
- CPT Corel Photo-Paint image
- CPX Corel Presentation Exchange Compressed drawing
- CRD Cardfile file
- CRP Corel Presents Run-Time Presentation
- CRT Certificate file
- CSC Corel Script
- CSP PC Emcee On-Screen image
- CSV Comma-separated values file
- CT Scitex CT Bitmap
- CTL Used in general to mean a file containing control information.
- CUE Microsoft Cue Cards data
- CUR Windows Cursor
- CUT Dr Halo bitmap
- CV Corel Versions archive
- CV Microsoft CodeView information screen
- CWK Claris Works data file
- CWS Claris Works template
- CXX C++ source code fil
FILE EXTENSIONS STARTING WITH D
- DAT Data file
- DAT WordPerfect Merge Data
- DBF Aston-Tate dBASE database
- DBX DataBeam image
- DCR Shockwave file
- DCS Desktop Color Separation file
- DCX Fax image (based on PCX)
- DDF BTRIEVE database
- DEF C++ Definition
- DEF SmartWare II data file
- DER Certificate file
- DIB Device-Independent Bitmap
- DIC Dictionary
- DIF Data Interchange Format spreadsheet
- DIR Macromedia Director file
- DIZ Description file
- DLG C++ Dialogue Script
- DLL Dynamic-Link Library
- DMF X-Trakker music module (MOD) file
- DOC FrameMaker or FrameBuilder document
- DOC Microsoft Word document
- DOC WordPerfect document
- DOC WordStar document
- DOT Microsoft Word document Template
- DPR Borland Delphi project header file
- DRV Driver
- DRW Micrografx Designer/Draw
- DSG DooM saved game
- DSM Dynamic Studio music module (MOD) file
- DSP Microsoft Developer Studio project
- DSQ Corel QUERY file
- DSW Microsoft Developer Studio workspace
- DWG AutoCAD drawing eXchange format
- DXF AutoDesk Drawing Interchange format
ENJOY THE DICTIONARY OF FILE EXTENSIONS!
About the Author
ILYAS QASIM
What is the Maximum Cluster size in Ext3 and EXT4 file systems?
I want to put Ubuntu on my PC but im not sure which one to take
Ext4 is the evolution of the most used Linux filesystem, Ext3. In many ways, Ext4 is a deeper improvement over Ext3 than Ext3 was over Ext2. Ext3 was mostly about adding journaling to Ext2, but Ext4 modifies important data structures of the filesystem such as the ones destined to store the file data. The result is a filesystem with an improved design, better performance, reliability and features.
File Systems
On very large disks, the maximum size of a volume or file and the maximum number of files per volume depend on the file system used to format the volume.
note-icon
Note
Windows 2000 can combine noncontiguous disk areas when creating volume sets and stripe sets, but these volumes have the same maximum size limitations of a single volume.
Maximum Sizes on FAT16 Volumes
FAT16 can support a maximum of 65,524 clusters per volume. Table 17.3 lists FAT16 size limits.
important-icon
Important
For Windows NT and Windows 2000, the cluster size of FAT16 volumes from 2 GB through 4 GB is 64 KB, which can create compatibility issues with some applications. For example, setup programs do not compute volume free space properly on a volume with 64 KB clusters and cannot run because of a perceived lack of free space. For this reason, either NTFS or FAT32 must be used on volumes larger than 2 GB. The Format tool in Windows 2000 displays a warning and asks for a confirmation before formatting a volume with 64 KB clusters.
Table 17.3 FAT16 Size Limits
Description
Limit
Ma
Maximum file size
2 32 minus 1 bytes
Maximum volume size
4 GB
Files per volume
2 16
Top Of Page
Maximum Sizes on FAT32 Volumes
A FAT32 volume must have a minimum of 65,527 clusters. The maximum number of clusters that Windows 2000 can mount on a FAT32 volume is 4,177,918. Windows 2000 can format volumes up to 32 GB, but it can use larger volumes created by other operating systems. Table 17.4 lists FAT32 size limits.
Table 17.4 FAT32 Size Limits
Description
Limit
Ma
Maximum file size
2 32 minus 1 bytes
Maximum volume size
32 GB (This is due to the Windows 2000 Format tool. The maximum volume size that Windows 98 can create is 127.53 GB).
Files per volume
Approximately 2 22
Top Of Page
Maximum Sizes on NTFS Volumes
In theory, the maximum NTFS volume size is 2 64 clusters. However, there are limitations to the maximum size of a volume, such as volume tables. By industry standards, volume tables are limited to 2 32 sectors.
Sector size, another limitation, is typically 512 bytes. While sector sizes might increase in the future, the current size puts a limit on a single volume of 2 terabytes (2 32 * 512 bytes, or 2 41 bytes). For now, 2 terabytes is considered the practical limit for both physical and logical volumes using NTFS.
Table 17.5 lists NTFS size limits.
Table 17.5 NTFS Size Limits
Description
Limit
Ma
Maximum file size
2 64 - 1 KB (Theoretical)
2 44 - 64 KB (Implementation)
Maximum volume size
2 64 clusters (Theoretical)
2 32 clusters (Implementation)
Files per volume
2 32 - 1
The ext3 or third extended filesystem is a journaled file system that is commonly used by the Linux kernel. It is the default file system for many popular Linux distributions. Stephen Tweedie first revealed that he was working on extending ext2 in Journaling the Linux ext2fs Filesystem in a 1998 paper and later in a February 1999 kernel mailing list posting, and the filesystem was merged with the mainline Linux kernel in November 2001 from 2.4.15 onward.[2][3][4] Its main advantage over ext2 is journaling which improves reliability and eliminates the need to check the file system after an unclean shutdown. Its successor is ext4.
Learn from here: http://kernelnewbies.org/Ext4
https://ext4.wiki.kernel.org/index.php/Ext4_Howto
http://hi.baidu.com/doughtymild/blog/item/32acbdeda7be305e79f05526.html
Seattle Conference on Scalability: Lustre File System




































































































