in reply to Re^2: Download from Perl script corrupted for XLSX file.
in thread Download from Perl script corrupted for XLSX file.

Try comparing them as bytes. If you have a Linux machine, you can run diff on them, or maybe diff their xxd representation: 
diff <(xxd original.xlsx) <(xxd downloaded.xlsx)

[download]
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

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Re^4: Download from Perl script corrupted for XLSX file.
by TorontoJim (Beadle) on Feb 09, 2023 at 16:58 UTC
    I have no clue how to do that. So I guess that will be tomorrow's learning project :-) Thank you for your input.
[reply]

      Another way to compare the contents of two files at the byte level is to hash both of them and compare the hashes. (it's the entire purpose of digest hashes).

      $ dd if=/dev/urandom of=file1 bs=1K count=10
10+0 records in
10+0 records out
10240 bytes (10 kB, 10 KiB) copied, 0.000148608 s, 68.9 MB/s
$ dd if=/dev/urandom of=file2 bs=1K count=10
10+0 records in
10+0 records out
10240 bytes (10 kB, 10 KiB) copied, 0.000145675 s, 70.3 MB/s
$ ls -l
total 24
-rw-r--r-- 1 foo foo 10240 Feb  9 17:47 file1
-rw-r--r-- 1 foo foo 10240 Feb  9 17:47 file2
$ sha256sum *
7986a677d3ef9a4f71ba18a5a7bd3a5f9a0c2d16939b4a43cd49fde86cef5a2f  file
+1
3c946e3212d808dbb7471eecc07e454c459352a6a3e25230288fe5faf08af555  file
+2

      [download]

      This shows that despite file1 and file2 having precisely the same size, their contents differ because the SHA256 hashes differ. See sha256sum for more.

      🦛

[reply]
[d/l]
        See sha256sum for more.

        Or use the standard perl utility: shasum -h

[reply]

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