1 files: what are they and how do I open them?
Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
We've got the information and best software solutions for opening these files effortlessly.
.1 file type #1: Manual page (Unix)
Documents with a .1 file extension are typically found on the Unix platform and are used in certain document systems in the manual / help file system.
Further details:
The "1" in Unix or Linux refers to the section number of the manual. The manual is divided into several sections, each for a different type of command or function.
Section 1 of the manual typically contains general commands that a user can use on the command line. So, a "1 file" in Unix would refer to a file that contains an unformatted manual page from section 1 of the Unix manual. This would typically be a text file that provides information on how to use a specific command.
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Unix
A multi-tasking operating system for various platforms
GNU Emacs
A popular text editor for linux
.1 file type #2: AIM AOL IM file
Files with 1 extension are associated with AIM OL Instant Messenger and they are used as one of the internal various data files.
Further details:
The 1 file extension is used by AIM AOL Instant Messenger instant messaging client. The .1 file contains various data used for internal purposes of the AIM instant messenger. Similar files can be numbered from .1 to .999.
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AOL Instant Messenger (AIM)
An instant messaging and presence computer program
.1 file type #3: Log file used by GNU Screen, a terminal multiplexer; records all output and input from a session for later review or analysis
A 1 file extension is related to the GNU Screen software. A 1 file contains log.
Further details:
The 1 file extension is associated with the Screen full-screen window manager that multiplexes a physical terminal between several processes.
The .1 file contains saved log data with information about running processes.
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Screen
A full-screen window manager for Windows
.1 file type #4: Cache used by Google Android
Files with 1 file extension are related to the Google Android, an operating system for smart phones and tablets. A 1 file contains cache.
Further details:
The 1 file extension is associated with the Google Android, an operating system for smart phones, tablets and other smart devices.
The 1 file stores cached data used by system, or Android apps.
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Google Android
One of the most popular OS for mobile systems
.1 file type #5: Binary data used by Inno Setup for installation purposes
Files with 1 file extension can also be found as installation resource packs for program setups made using Inno Setup software.
Further details:
The 1 file extension is associated with the Inno Setup, a free application used to create Windows application installation packages. The .1 file contains binary data used in an installation process of an application.
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Inno Setup
A freeware installation creator for Windows
.1 file type #6: Mozilla Firefox file
Files with 1 extension are always used by Mozilla Firefox to store data for cookies.
Further details:
File extension 1 is associated with the Mozilla Firefox and Netscape Navigator web browsers.
This type of .1 files is used for cookie, image, popup permissions files. It is used in earlier versions of these browsers.
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Netscape Navigator
Older multi-platform web browser
Firefox
A popular free web browser from Mozilla
.1 file type #7: Backup file for Pro/ENGINEER software
Files with 1 suffix can also be found as part of old Pro/ENGINEER 3D CAD software. Some sort of auto-recovery backup.
Further details:
File extension 1 is also associated with the Pro/ENGINEER (Creo Elements/Pro) 3D CAD/CAM/CAE modeling software.
A .1 file contains backup of Pro/ENGINEER data used as a prevent against computer crash.
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Pro/Engineer (Creo Elements/Pro)
Set of 3D CAD/CAM/CAE design tools from PTC
.1 file type #8: Archive files compressed with Stuffit software
A 1 file extension is associated with the Stuffit and used for its archive files.
Further details:
The 1 file extension is associated with the Stuffit compression utility for Mac and Windows also older versions are available for Linux and Solaris.
The 1 file contains the first part of Stuffit split archive.
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Stuffit
A popular file archiving utility
StuffIt for Mac
Mac version of the popular utility
StuffIt Deluxe
A commercial compression utility
StuffIt Deluxe for Mac
A backup and archive utility
StuffIt Expander
A free decompression utility with good file format support
StuffIt Expander for Mac
A Mac version of the popular decompression utility
.1 file type #9: SNES split ROM image
Files with .1 file extension can also be found as Super Nintendo ROM cartridge images for SNES emulators like Snes.9x
Further details:
The 1 file extension is associated with the Super Nintendo ROM image file format used by various SNES emulators such as Snes9x.
This type of .1 files contains the first part of the split ROM image. To open split ROM you need to have all parts of it.
Open file with:
Snes9x
A free Super Nintendo emulator