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# unzip -t bad.zip Archive: bad.zip testing: testfile.txt OK testing: testfile2.txt bad CRC 32e1dbe6 (should be 32f +0dbe6) At least one error was detected in bad.zip.
# ./ziptest.pl bad.zip Length Size Last Modified CRC-32 Name ... 26 14 Mon Aug 28 18:07:58 2017 75b0ca95 testfile.txt 15 9 Mon Aug 28 18:08:10 2017 32e1dbe6 testfile2.txt All CRCs check OK