Ok that did it. Now it seems to work as expected 
# ./ziptest.pl test.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  32e1dbe7 testfile2.txt
Member testfile2.txt CRC error: file says 32e1dbe7 computed: 32e1dbe6
CRC errors found

# unzip -t test.zip
Archive:  test.zip
    testing: testfile.txt             OK
    testing: testfile2.txt            OK
No errors detected in compressed data of test.zip.

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In reply to Re^6: File integrity checker by roperl
in thread File integrity checker by roperl

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