http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=EPACK_%28executable_compression%29 2026-04-17T06:40:50Z Revision history for this page on the wiki MediaWiki 1.19.2 http://fileformats.archiveteam.org/index.php?title=EPACK_(executable_compression)&diff=46386&oldid=prev 2023-11-26T13:13:58Z

<p>Created page with &quot;{{FormatInfo |formattype=electronic |subcat=Compression |subcat2=Executable compression |released=≤1998 }} &#039;&#039;&#039;EPACK&#039;&#039;&#039; is an executable compression utility for DOS, develope...&quot;</p> <p><b>New page</b></p><div>{{FormatInfo<br /> |formattype=electronic<br /> |subcat=Compression<br /> |subcat2=Executable compression<br /> |released=≤1998<br /> }}<br /> '''EPACK''' is an executable compression utility for DOS, developed by Oleg V. Stepanyuk.<br /> <br /> Whether EPACK is its official name is not completely certain, but there's nothing better to refer to it by.<br /> <br /> == Format details ==<br /> An EPACKed file is really a special self-extracting compressed file format. When executed, it writes the original file to a temporary file, executes it, then deletes it.<br /> <br /> The envelope format is always [[MS-DOS EXE|DOS EXE]], and the temporary filename is always &quot;TEMP.EXE&quot;. The payload file could be in any format compatible with this mechanism. In practice, that means certain [[EXE]] formats, and [[DOS executable (.com)|COM]].<br /> <br /> == Identification ==<br /> [Only v1.6 has been evaluated.] The first 3920 bytes of a compressed file are always the same, though there is little in the way of plain-text signatures. The string &quot;{{magic|TEMP.EXE}}&quot; appears at offset 883.<br /> <br /> == Software ==<br /> * [http://old-dos.ru/index.php?page=files&amp;mode=files&amp;do=show&amp;id=5320 EPACK, at old-dos.ru]<br /> * {{OldskoolDOSEXE}} → DOSEXE Executable Tools Pack → packers/epack.160-Stepanyuk Oleg.rar</div>

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