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From: dave@onfcanim.UUCP
Newsgroups: comp.unix.questions,comp.unix.wizards,comp.unix.xenix
Subject: Re: Confused file name in directory
Message-ID: <15238@onfcanim.UUCP>
Date: Sat, 28-Feb-87 15:35:42 EST
Article-I.D.: onfcanim.15238
Posted: Sat Feb 28 15:35:42 1987
Date-Received: Sun, 1-Mar-87 13:29:25 EST
References: <105@aob.UUCP> <563@aw.sei.cmu.edu.sei.cmu.edu> <5587@mimsy.UUCP> <1667@oddjob.UChicago.EDU>
Reply-To: dave@onfcanim.UUCP (Dave Martindale)
Organization: National Film Board / Office national du film, Montreal
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Xref: utgpu comp.unix.questions:1221 comp.unix.wizards:1166 comp.unix.xenix:131

>) There is still another way, easier yet but more dangerous and
>) thrilling.  You cannot edit a directory, but you can edit a file.
>) And the only difference between the two is one byte.   ...
>
>Hoowie!  Is that complicated.  Sounds fun though.  I just
>unmount the partition, get out a calculator, and adb the raw
>disk.

It's most easily done as a three-step process:

1) unmount the disk, figure out where that inode lives on the disk,
   adb disk and patch the inode's "format" word to make it into a plain file.

2) mount the disk (while single user!), and edit the directory with
   adb, emacs, whatever

3) unmount the disk, patch the inode back into a directory, fsck the
   filesystem unless you have a great deal of confidence in yourself,
   then bring the machine back up.

This minimizes the possibility of clobbering something other than
the directory you want to alter.