[Bug 510613] Re: look(1) can't open bigfiles

[Stuart Taylor]

It would be great to see this fixed in an upcoming release of Ubuntu.

I had the same problem and applied Mark Nieweglowski's fix here -
https://github.com/stuartraetaylor/bsdmainutils-look

$ ./look -bf $(echo -n "P at ssw0rd" | sha1sum | cut -d' ' -f1) pwned-passwords-sha1-ordered-by-hash-v4.txt
21BD12DC183F740EE76F27B78EB39C8AD972A757:51259

There's also an alternative approach here -
https://www.tablix.org/~avian/blog/archives/2018/10/checking_passwords_against_haveibeenpwned_com/

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https://bugs.launchpad.net/bugs/510613

Title:
  look(1) can't open bigfiles

Status in bsdmainutils package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: bsdmainutils

  look(1) isn't passing O_LARGEFILE to open(2).

      $ dpkg -S /usr/bin/look
      bsdmainutils: /usr/bin/look
      $ dpkg-query -W bsdmainutils
      bsdmainutils    6.1.10ubuntu4
      $
      $ echo | socat -u - file:bigfile,create,largefile,seek=100000000000
      $ ls -l bigfile
      -rw-r--r-- 1 kiosk kiosk 100000000001 2010-01-21 11:17 bigfile
      $ look foo bigfile
      look: bigfile: Value too large for defined data type
      $ strace look foo bigfile 2>&1 | grep EOVERFLOW
      open("bigfile", O_RDONLY)               = -1 EOVERFLOW (Value too large for defined data type)
      $

  I've a 11.5GB sorted file and look's binary search would be ideal but I 
  can't use it.  Once it manages to open the file, it needs to be able to
  cope with the long offsets it may be seeking to.

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