zipinfo

Additional Notes

zipinfo displays detailed information about the contents of ZIP archives. It shows file names, compression methods, sizes (stored/compressed), compression ratios, timestamps, CRC-32 checksums, and file attributes. It is more detailed than unzip -l and provides a columnar format that is easy to read or parse.

For each file in the archive, zipinfo shows the file permissions, whether it is a directory, the compression method used (stored, deflated, bzip2, etc.), and both the original and compressed sizes. The output can be customized with flags to show timestamps, comments, and encryption status.

Syntax

zipinfo [options] archive[.zip] [file...]

Parameters

• archive: Path to the ZIP file.
• file: Optional pattern to list only matching entries.

Common Options

• -1: List only filenames, one per line.
• -h: Show header information (archive comment, total size, etc.).
• -l: Long format (default).
• -m: Show medium format.
• -s: Show short format.
• -t: Show totals only.
• -T: Show timestamps in sortable format.
• -v: Verbose/diagnostic mode.
• -x pattern: Exclude files matching the pattern.

Examples

zipinfo archive.zip

List all files in the archive with detailed information.

zipinfo -1 archive.zip

List only filenames.

zipinfo -h archive.zip

Show header information and archive totals.

zipinfo -T archive.zip

Show timestamps in sortable (YYYYMMDD.HHMMSS) format.

zipinfo archive.zip "*.txt"

List only files matching the pattern *.txt.

zipinfo -t archive.zip

Show only the total count, sizes, and compression ratio.

Practical Notes

• zipinfo is part of the unzip package and uses the same engine.
• The default columns show: file type/permissions, size, compressed size, ratio, date, time, CRC-32, and name.
• The compression method column shows: s (stored), d (deflated), b (bzip2), r (reduced), etc.
• For a simpler file list, use unzip -l.
• For more detailed extraction testing, use unzip -t.