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7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [2] 7-Zip has its own archive format called 7z introduced in 2001, [12] but can read and write several others.
A self-extracting archive created using 7-Zip. A self-extracting archive (SFX or SEA) is a computer executable program which combines compressed data in an archive file with machine-executable code to extract the information. Running on a compatible operating system, it does not need a suitable extractor in the target computer to extract the data.
Self Extracting Archive Classic Mac OS: Classic Mac OS (implicitly) A pre-Mac OS X Self-Extracting Archive format. StuffIt, Compact Pro, Disk Doubler and others could create .sea files, though the StuffIt versions were the most common. .sen Scifer Multiple Multiple Yes Scifer Archive with internal header .sfx Self Extracting Archive
Other well-known software with CAB archive support includes WinZip, WinRAR or 7-Zip. The aforementioned cabextract is a common tool for Linux systems, [13] but is only capable of extracting archives. The gcab tool however can both extract and create CAB archives. [14] For a full list, see Comparison of file archivers § archive formats.
Thus, when a ZIP file is viewed in a text editor the first two bytes of the file are usually "PK". (DOS, OS/2 and Windows self-extracting ZIPs have an EXE before the ZIP so start with "MZ"; self-extracting ZIPs for other operating systems may similarly be preceded by executable code for extracting the archive's content on that platform.)
The operating systems the archivers can run on without emulation or compatibility layer. Ubuntu's own GUI Archive manager, for example, can open and create many archive formats (including Rar archives) even to the extent of splitting into parts and encryption and ability to be read by the native program.
IExpress (IEXPRESS.EXE) can be used for distributing self-contained installation packages (INF-based setup executables) to multiple local or remote Windows computers.It creates a self-extracting executable (.EXE) or a compressed Cabinet file using either the provided front end interface (IExpress Wizard), or a custom Self Extraction Directive (SED) file. [1]
Doc: Each exe has space for resources (such as icons) which are not code. An SFX contains code to extract the resources (the code for winrar, say) - this is called a stub and is pre-created using any standard compiler. The resource (the ZIP/CAB/RAR file) is added later to the end of the EXE. Adding a resource does not require a compiler.