![]() It is located at the end of the archive structure and it is required to read the list of the files (see: Zip file format structure). This is, because the standard zip tools are mainly using lseek function in order to set the file offset at the end to read its end of central directory record. The proper syntax would be: $ unzip 2 GiB) without large file support bsdtar and bsdcpio) can and will do so when reading through a pipe, meaning that the following is possible: wget -qO- | bsdtar -xvf. ![]() In addition, individual entries also include this information in a local file header, for redundancy purposes.Īlthough not every ZIP decompressor will use local file headers when the index is unavailable, the tar and cpio front ends to libarchive (a.k.a. The directory at the end of the archive is not the only location where file meta information is stored in the archive. As such it appears unsurprising that most ZIP decompressors simply fail when the archive is supplied through a pipe. This would appear to pose a problem when attempting to read a ZIP archive through a pipe, in that the index is not accessed until the very end and so individual members cannot be correctly extracted until after the file has been entirely read and is no longer available. This directory says where, within the archive each file is located and thus allows for quick, random access, without reading the entire archive. The ZIP file format includes a directory (index) at the end of the archive. ![]() This is a repost of my answer to a similar question:
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