Opening a SED File

The SED file type is primarily associated with Sed.

SED	File extension: SED
	File type:	script

What is a SED file?

SED files mostly belong to Sed by Free Software Foundation. A SED file is a script written in the language used by Stream Editor (Sed) text manipulation program. A SED script contains commands and regular expressions used to edit, filter, replace/transform, and extract text fragments in a text document. Another type of SED file is a self-extraction directive which IExpress Wizard uses to create Windows self-extracting package (EXE) files. The contents of a self-extraction directive are stored as text. They include a list of all files to be included in a package, popup messages etc. SED is also the filename extension of seed files for designs exported by Civil 3D.

How to open SED files

You need a suitable software like Sed to open a SED file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your SED file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SED file directly in the browser:. Just drag the file onto this browser window and drop it.

Online SED Text Viewer

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Online File Viewer

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Programs that open and convert SED files:

Sed by Free Software Foundation
See the previous paragraphs to learn more about the main application. SED files are often referred to as Sed developers because this type of file is primarily created or used by this software.
IExpress Wizard (self-extraction directive) by Microsoft
IExpress Wizard is a Windows utility for creating installer packages. It uses a SED file to save the self-extraction directive of a self-extracting package (EXE, CAB etc.). This file format is classified as Settings.
Sedertree Matrix Wheeling Systems (system profile) by Bayesoft
Sedertree Matrix Wheeling System is a discontinued scientific lottery number generation and positioning system. It saves a system profile in a SED file. This file format is classified as Data.

Technical Data for SED File Extension

File classification:

Developer

Related files:

rdt, see, seb, ac, mo, tgz

Mime type:

text/x-sed

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: emcClass
EXEFile: rundll32.exe %SystemRoot%\system32\keymail.dll,OpenDocument

a sed script is a special file format by Free Software Foundation and should only be edited and saved with the appropriate software.

How to solve problems with SED files

Associate the SED file extension with the correct application.
Update your software that should actually open scripts. Because only the current version supports the latest SED file format. Search, therefore, e.g. on the Free Software Foundation manufacturer website after an available Sed update.
To make sure that your SED file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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