On 17/01/2011, at 6:50 PM, Chris Berkhout wrote:
I think you're right about different implementations giving
different results.
There was always one true name, and false references that aliased it.
But since that renaming brought everything into line, there must have
been and uppercase version and a lowercase version stored somewhere,
rather than a single true name being differently interpreted by
various implementations.
The single true name was the actual filesystem name (lower case), which
you repaired. The upper-case version was stored in the password file as
your home directory, which gets propagated into ENV['HOME'] when you
log in.
Clifford Heath.
Cheers,
Chris
On Mon, Jan 17, 2011 at 8:22 AM, Clifford Heath
<[email protected]> wrote:
Chris,
I don't think this is a Ruby thing, but comes from the different ways
Ruby gets the information. getpwuid gets your password entry from
the password database. Dir["/"] reads the content of the root
directory.
The env, well, you know.
I'm not sure what the Mac implementation of Dir.pwd does, but it
could
not be any of the above. One BSD implementation I knew had a very
clunky method: it would progressively read the entries in .., ../..,
../../..,
etc, and match the inode numbers with ., .., ../.., etc. I suspect
that
Apple
has replaced that, as most unices have, with a kernel implementation,
but I can't see it documented in /usr/share/man/man2.
https://github.com/ruby/ruby/blob/trunk/dir.c says it's implemented
using
my_getcwd, which is probably just a wrapper for getcwd (man 3 getcwd)
from the Apple standard library. Try a little C program and tell us
what it
says:
#include <unistd.h>
void main()
{
char buf[1024];
getcwd(buf, sizeof(buf));
puts(buf);
exit(0);
}
Clifford Heath.
On 16/01/2011, at 10:59 PM, Chris Berkhout wrote:
Hi All,
Today I was surprised to find that the "U" in Users is uppercase
(which I consider correct) in:
Etc.getpwuid.dir => "/Users/chrisberkhout"
Dir.entries("/") => [..., "Users", ...]
ENV['PWD'] => "/Users/chrisberkhout"
But lowercase in:
Dir.pwd => "/users/chrisberkhout"
File.expand_path('.') => "/users/chrisberkhout"
Also,
- Manually changing into the uppercase directory doesn't help.
- Deeper directories with uppercase letters seem fine.
- Other root-level directories with uppercase letters seem fine.
Anyone else run into this issue?
Cheers,
Chris
--
You received this message because you are subscribed to the Google
Groups
"Ruby or Rails Oceania" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/rails-oceania?hl=en.
--
You received this message because you are subscribed to the Google
Groups
"Ruby or Rails Oceania" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/rails-oceania?hl=en.
--
You received this message because you are subscribed to the Google
Groups "Ruby or Rails Oceania" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to [email protected]
.
For more options, visit this group at http://groups.google.com/group/rails-oceania?hl=en
.
--
You received this message because you are subscribed to the Google Groups "Ruby or
Rails Oceania" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/rails-oceania?hl=en.
