(++ for the sample). Interestingly, I see the other reported behaviour where the mtime is rounded down to even seconds:

$ echo foo > abc
$ stat abc | grep Mod
Modify: 2017-01-11 09:47:51.022907652 +0000
$ perl -M'IO::Compress::Zip qw(zip)' -e ' zip "abc" => "abc.zip" '
$ mkdir out
$ cd out
$ unzip ../abc.zip
Archive:  ../abc.zip
  inflating: abc                     
$ stat abc | grep Mod
Modify: 2017-01-11 09:47:50.000000000 +0000

[download]

Versions are:

And this from "unzip -v":

UnZip 6.00 of 20 April 2009, by Info-ZIP.  Maintained by C. Spieler.  
+Send
bug reports using http://www.info-zip.org/zip-bug.html; see README for
+ details.

Latest sources and executables are at ftp://ftp.info-zip.org/pub/infoz
+ip/ ;
see ftp://ftp.info-zip.org/pub/infozip/UnZip.html for other sites.

Compiled with gcc 5.0.0 20150210 (Red Hat 5.0.0-0.11) for Unix (Linux 
+ELF) on Feb 11 2015.

UnZip special compilation options:
        COPYRIGHT_CLEAN (PKZIP 0.9x unreducing method not supported)
        SET_DIR_ATTRIB
        SYMLINKS (symbolic links supported, if RTL and file system per
+mit)
        TIMESTAMP
        UNIXBACKUP
        USE_EF_UT_TIME
        USE_UNSHRINK (PKZIP/Zip 1.x unshrinking method supported)
        USE_DEFLATE64 (PKZIP 4.x Deflate64(tm) supported)
        UNICODE_SUPPORT [wide-chars, char coding: UTF-8] (handle UTF-8
+ paths)
        MBCS-support (multibyte character support, MB_CUR_MAX = 6)
        LARGE_FILE_SUPPORT (large files over 2 GiB supported)
        ZIP64_SUPPORT (archives using Zip64 for large files supported)
        USE_BZIP2 (PKZIP 4.6+, using bzip2 lib version 1.0.6, 6-Sept-2
+010)
        VMS_TEXT_CONV
        [decryption, version 2.11 of 05 Jan 2007]

UnZip and ZipInfo environment options:
           UNZIP:  [none]
        UNZIPOPT:  [none]
         ZIPINFO:  [none]
      ZIPINFOOPT:  [none]

[download]

I'm wondering if maybe it's something in the unzip. Is there a simple way to query the entries in the zipfile to see what its contents are to the resolution of seconds? (I never use zip/unzip so this is all beyond my realm)

In reply to Re^10: Archive::Zip Modify Date Oddity by hippo
in thread Archive::Zip Modify Date Oddity by lhchin

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