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[Bug 1009045] Re: md5sum 'backslash-in-filename' feature is not documented in man page

 

Thank you for opening this bug and helping make Ubuntu better.

This is not a bug. Coreutils (as most of GNU packages) uses Texinfo as
the primary source for documentation. The man pages are a summary
*only*; for full docs, the user is referred to 'info':

The  full  documentation  for md5sum is maintained as a Texinfo manual.
       If the info and md5sum programs are properly installed  at  your  site,
       the command

              info coreutils 'md5sum invocation'

       should give you access to the complete manual.

As such, closing this as not-a-bug.

** Changed in: coreutils (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1009045

Title:
  md5sum 'backslash-in-filename' feature is not documented in man page

Status in “coreutils” package in Ubuntu:
  Invalid

Bug description:
  Encountered in

      Description : Ubuntu 10.04.4 LTS
      Release     : 10.04

  using

       md5sum (GNU coreutils) 7.4

  $ apt-cache policy coreutils
  coreutils:
    Installed: 7.4-2ubuntu3
    Candidate: 7.4-2ubuntu3
    Version table:
   *** 7.4-2ubuntu3 0
          500 http://us.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
          100 /var/lib/dpkg/status
       7.4-2ubuntu2 0
          500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages

  Related to
  https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/53584

  The following information is in "info coreutils 'md5sum invocation'"

     For each FILE, `md5sum' outputs the MD5 checksum, a flag indicating
  a binary or text input file, and the file name.  If FILE contains a
  backslash or newline, the line is started with a backslash, and each
  problematic character in the file name is escaped with a backslash,
  making the output unambiguous even in the presence of arbitrary file
  names.  If FILE is omitted or specified as `-', standard input is read.

  The corresponding section in the man page reads as follows:

         The  sums are computed as described in RFC 1321.  When checking, the input should be a former output of this
         program.  The default mode is to print a line with checksum, a character indicating type (`*' for binary,  `
         ' for text), and name for each FILE.

  The documentation of the behaviour of md5sum when given filenames
  containing backslashes is missing from the man page, and was
  unexpected behaviour when I first encountered it.

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