Common File Types in OS/2

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Operating System Files

Driver Related

Extension Name Application Comments
ADD Adapter Device Driver
BID Bus Interface Driver Used to support Microsoft's LADDR layered device driver model, which is now rarely used in OS/2.
DDP Device Driver Profile OS/2 Warp Device Driver Installer / DDINSTAL.EXE Text File.[1]
DSC Display Configuration File DSPINSTL Display Installer (Text File)
DSP Profile DSPINSTL Display Installer (Text File)
DMD Device Manager Driver
DRV Printer Device Driver dyn
DCP Definition Code Page [2]
FLT Filter Device Driver
I13
IFS Installable File System [3]
NIF Network Information File Network Adapters and Protocols Configuration Contains the information of the network .OS2 driver. (Text File)
OS2 OS/2 Network Driver
PSD Platform Specific Driver
SCR Script to install MMOS2 Drivers. (MINSTALL). Text File.
SYS
SNP Snooper
SYM Symbol File
TSD Type Specific Driver Used to support Microsoft's LADDR layered device driver model, which is now rarely used in OS/2.
VSD Vendor Specific Driver

General

Extension Name Application Comments
CMD Command processor (Text File)
DAT SYSLOG error log SYSLOGPM
DIF
FON Font File OS/2 Fonts Information
IMP
INI Initialisation file
INF
MSG Message File MKMSGF, mkmsgf (Make Message File Utility Clone), e_msgf [4]
ERR Errors
TCP
TDF Trace Definition File
SEP
WPS

Bitmaps

Extension Name Application Comments
BMP Bitmap File [5]
DIB
ICO Icon File IconEdit
PTR Pointer File IconEdit

Executables

Extension Name Application Comments
*.DLL Dynamic Link Library PMDLL
*.EXE Executable
*.COM Executable

Development

Extension Name Application Comments
RES Resource Compiler File Dialog Editor Text File [6] [Resource Compiler]
RC Resource Compiler Script RC Text File [7] [Resource Compiler]
DLG Dialog Text File
IDL Text File
CSC Text File. Newer versions of SOM replaced this extension with .IDL.

OS/2 2.x Productivity

Extension Name Application Comments
$D$ Daily Planner Daily Planner
$$L Spreadsheet PMSPREAD.EXE
$T$ ToDo List ToDo List
$$A Tune Editor/Tine Tune Editor/Tine
$D$ Planner Planner
$$F Database Database
$N$ Note Note
$$P Sticky Sticky
MET Picture Picture Viewer
PIF Picture
SPL Picture

Third Parties

Extension Name Application Comments
CBZ CBZ File CandyBarZ CandyBarz theme file
DIS Drawing Format BlueCAD
SCH eSchemes File eSchemes

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