Re: Unlink not deleting, Threading issue?

Greetings, pimperator.

I'm gonna have to go with the file probably has a handle open on it. But I don't quite know what type of system you're attempting to do this on -- *NIX, Win*, {...}. Win* ain't got a (native) unlink (that I can recall). But of course, all the *NIX's do have unlink. I'm also not familiar with the peculiars with Perl on Win, and unlink. But the doc's say:

On error, unlink will not tell you which files it could not remove. If you want to know which files you could not remove, try them one at a time:
    foreach my $file ( @goners ) {
    unlink $file or warn "Could not unlink $file: $!";
    }
[download]

You will also need to pass -U flag to Perl.

If nothing else. Now you can at least attempt to track the unlinking of the files, to see why/what's going on.

Best wishes.

--Chris

Ąλɐp ʇɑəɹ⅁ ɐ əʌɐɥ puɐ ʻꜱdləɥ ꜱᴉɥʇ ədoH

Comment on Re: Unlink not deleting, Threading issue? Download Code

Replies are listed 'Best First'.
Re^2: Unlink not deleting, Threading issue? by dave_the_m (Monsignor) on Jun 05, 2014 at 07:03 UTC
You will also need to pass -U flag to Perl. No you won't. Unless the OP is trying (as root) to direcltly unlink a directory on an ancient UNIX variant, the -U flag is irrelevant. Dave.	[reply]
Re^3: Unlink not deleting, Threading issue? by taint (Chaplain) on Jun 05, 2014 at 13:08 UTC
Greetings, dave_the_m. The OP (pimperator) mentions Super User twice in the post. “...the user has super-user privileges...” and “After doing some reading I see that unlink() will not work if the file is open or if the user doesn't have superuser privileges, which is not the case for both.” Which is why I felt it pertinent to mention the `-U` flag. --Chris Ąλɐp ʇɑəɹ⅁ ɐ əʌɐɥ puɐ ʻꜱdləɥ ꜱᴉɥʇ ədoH	[reply]
Re^4: Unlink not deleting, Threading issue? by dave_the_m (Monsignor) on Jun 05, 2014 at 14:41 UTC
But the -U flag is only for unlinking directories, not files, and even then it only works on a few ancient UNIX variants. Systems like Linux don't allow you unlink() directories with or without -U. And unless there's some documentation I missed, -U does not affect whether Windows can unlink opened files. Dave.	[reply]
A reply falls below the community's threshold of quality. You may see it by logging in.
Re^2: Unlink not deleting, Threading issue? by ikegami (Patriarch) on Jun 06, 2014 at 16:57 UTC
ack, no! One uses `-U` when one wants to `unlink` directories, which is never! Use `rmdir` to remove directories. Don't use `-U`!	[reply] [d/l] [select]
A reply falls below the community's threshold of quality. You may see it by logging in.
Re^2: Unlink not deleting, Threading issue? by Anonymous Monk on Jun 07, 2014 at 16:37 UTC
This is very dangerous advice. If someone did as you suggested and actually managed to unlink a directory, it would probably damage their filesystem. The worst part is that you copy/pasted the how to do it parts while leaving out the big red flags that are trying to keep us from doing something stupid and tragic.	[reply]


No such thing as a small change
	PerlMonks