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-t Test .ZIP file integrity
This option is used to test files within a .ZIP file in order to verify
that they are valid and have not been corrupted. PKUNZIP will perform all
the actions that would normally be taken during a .ZIP file extraction,
except that files will not be written to disk.
The data will be extracted and checked against the CRC to ensure it's
validity. After each file is checked it's name will be displayed with an
"OK".
C:\PKSTUFF>pkunzip zc102 -t
Searching ZIP: ZC102.ZIP - PKWARE Support BBS (414) 354-8670
Testing: ZC.DOC OK
Testing: ZC.EXE OK
Testing: ORDER.FRM OK
Testing: VER-HIST.TXT OK
In this example a command is issued which performs a test on the .ZIP file
"zc102". As each file is tested its name is displayed. Note that the
.ZIP file comment is displayed.
If you test a file that is not a .ZIP file, or specify particular files
within the .ZIP file that do not exist, you will receive the message:
PKUNZIP: (E11) No file(s) found.
Testing a .ZIP file with errors would produce a display something like
this:
Searching ZIP: PROBLEM.ZIP
Testing: WORLD.M~ PKUNZIP: (W15) Warning! file fails CRC check
Testing: CORELDRW.BPT OK
PROBLEM.ZIP has errors!
Normally, a CRC failure as above indicates that a file has been damaged
either in storage or transmission. For instructions on attempting to
repair a .ZIP file that has been corrupted, see PKZIPFIX in the Trouble
Shooting section.
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