t (Test integrity of archive) command
Tests archive files.
Example
7z t archive.zip *.doc -r
tests *.doc files in archive archive.zip.
Notes
7-Zip doesn't use the system wildcard parser. 7-Zip doesn't follow the archaic rule by which *.* means any file. 7-Zip treats *.* as matching the name of any file that has an extension. To process all files, you must use a * wildcard.
Switches that can be used with this command
-ai (Include archives)
-an (Disable parsing of archive_name)
-ax (Exclude archives)
-i (Include)
-p (Set Password)
-r (Recurse)
-sns (Store NTFS alternate Streams)
-x (Exclude)