* ZIP drive image By © Raimond Spekking / CC BY-SA 4.0 (via Wikimedia Commons), CC BY-SA 4.Download listen offline. In that way, it's much simpler.just like its Unix shell equivalent. However, the GZIP option and MEMBER= options are mutually exclusive. My recent example about FINFO and file details relies heavily on that approach. When dealing with ZIP file archives that contain multiple files, you could use the MEMBER= option on FILENAME ZIP to address a specific file that you want. Note: Because each GZIP file represents just one compressed file, the MEMBER= option doesn't apply. These files are read using special drivers that don't process the bytes sequentially, so you need the entire file available on disk. If your file is in a binary format such as a SAS data set (sas7bdat) or Excel (XLS or XLSX), you probably will need to expand the file completely before reading it as data. Infile fromzip /* read directly from compressed file */ input date : yymmdd10. Here's an example that creates a compressed version of a log file:įilename fromzip ZIP "C: \Logs \SEGuide_" GZIP Example:įilename my_gz ZIP "path-to-file/" GZIP When working with GZIP files, simply add the GZIP keyword to the FILENAME statement. The latest version of SAS adds support for GZIP by extending the FILENAME ZIP method. I've written extensively about using FILENAME ZIP to read and write ZIP archives with SAS. The algorithm used to compress GZIP files performs especially well with text files, although you can technically GZIP any file that you want.
GZIP tools are built into Unix/Linux platforms and are commonly used to save space when storing large text-based files that you're not ready to part with: log files, csv files, and more. Although both are forms of compressed files, a GZIP file is usually a compressed copy of a single file, whereas a ZIP file is an "archive" - a collection of files in a compressed virtual folder. gz file extension, are a different format than ZIP files. Remember when 100MB was large?SAS 9.4 Maintenance 5 includes new support for reading and writing GZIP files directly.
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