Check the Integrity of a ZIP File

Tests the integrity of a ZIP file using the unzip -t command. Verifies that the file exists, is non-empty, and has no detectable errors in its compressed data. Returns FALSE with a message if the file is invalid or if unzip is unavailable.

Usage

CheckZip(File)

Arguments

File

Character. The path to the ZIP file to check. Must be a single, non-empty string.

Value

Logical: TRUE if the file exists, is non-empty, and passes the integrity check; FALSE otherwise.

Author

Ahmed El-Gabbas