topic Re: ghosty file !!!! in Operating System - HP-UX

ghosty file !!!!

Kuntal Gupta — Fri, 16 Sep 2011 11:51:28 GMT

Dear HP-UX lovers,

Pls find the comand o/p first:

uerr1>ll
total 453024
drwxr-xr-x   2 bin        bin             96 Nov 18 2010 ac
crw-rw-rw-   1 root       root        72 0x000004 Nov 14 2010 arp
crw-rw----   1 sybase     bin        101 0x000004 Jan 27 2010 async
crw-rw-rw-   1 bin        bin        101 0x000000 Oct 15 2009 asyncdsk
crw-rw-rw-   1 bin        bin        168 0x000000 Oct 16 2009 beep
..........................................................

.........................................................

drwxr-xr-x   2 bin        bin             96 Nov 18 2010 rchgr
drwxr-xr-x   2 bin        bin           8192 Sep 2 19:46 rdisk
-rw-rw-rw-   1 root       sys        231822848 Jan 21 2010 rdj <<----Note this file
drwxr-xr-x   2 bin        bin          16384 Sep 2 19:46 rdsk
drwxr-xr-x   2 bin        bin           8192 Nov 18 2010 rmt
........................................................

......................................................

crw-r--r--   1 root       sys         97 0x000000 Oct 15 2009 vxportal
crw-rw-rw-   1 bin        sys          3 0x000004 Oct 15 2009 zero
uerr1>pwd
/dev
uerr1>ll rdj
rdj not found << ------------------------ Fishy!!
uerr1>du -ks /dev/*|sort -rn|head -10
226392 /dev/rdj
48      /dev/dblinks
40      /dev/vx
.....................
8       /dev/ptym
uerr1>

Quarry:

What might be the reason?

I have tried to move the file to /tmp also, but it is not happening.

Pls comment

Regards...

Kuntal

Re: ghosty file !!!!

James R. Ferguson — Fri, 16 Sep 2011 12:08:03 GMT

Hi:

It is likely that the file name contains unprintable characters so that it's name isn't simply "rdj". There are several things you can doto see/move/remove the file:

# ls -l -i -b /dev

...which wiil show the inode in the first column and show any non-printing characters in octal notation.

Now you could do things like:

# rm -i /dev/rdj*

...and respond "y" if this is what you want to do; or:

# find /dev -xdev -type f -inum <inum_of_file> -exec rm {} \;

...to remove the file by its inode (which is unique within a filesystem, so use '-xdev' to inhibit crossing out of the filesystem.

Regards!

...JRF...

Re: ghosty file !!!!

Kuntal Gupta — Fri, 16 Sep 2011 12:21:51 GMT

Dear JRF-Sir,

I do always admire your reply.

... and show any non-printing characters in octal notation. << ---- Pls describe in brief to update my knowledge.

Why this type of file is created?

uerr1>ls -l -i -b /dev
total 453024
3973 drwxr-xr-x   2 bin        bin             96 Nov 18 2010 ac
   782 crw-rw-rw-   1 root       root        72 0x000004 Nov 14 2010 arp

.......................................................................
........................................................................
4458 drwxr-xr-x   2 bin        bin             96 Nov 18 2010 rchgr
   910 drwxr-xr-x   2 bin        bin           8192 Sep 2 19:46 rdisk
   956 -rw-rw-rw-   1 root       sys        231822848 Jan 21 2010 rds\010j << -----------The file
   855 drwxr-xr-x   2 bin        bin          16384 Sep 2 19:46 rdsk
   935 drwxr-xr-x   2 bin        bin           8192 Nov 18 2010 rmt
......................................................................
........................................................................
   977 crw-r--r--   1 root       sys         97 0x000000 Oct 15 2009 vxportal
1020 crw-rw-rw-   1 bin        sys          3 0x000004 Oct 15 2009 zero
uerr1>

Hope deletion of this file will not effect the system functionality?

Warm Regards...

Kuntal

Re: ghosty file !!!!

James R. Ferguson — Fri, 16 Sep 2011 13:07:00 GMT

@Kuntal Gupta wrote:

... and show any non-printing characters in octal notation. << ---- Pls describe in brief to update my knowledge.

Why this type of file is created

956 -rw-rw-rw- 1 root sys 231822848 Jan 21 2010 rds\010j << -----------The file
Hope deletion of this file will not effect the system functionality?

Files like this get created when you "fat-finger" the keyboard or, in this case use the backspace key without having defined it for use properly with 'stty'.

Since the file in question resides in the '/dev' filesystem and the file is a regular file (i.e. not a character or block device file) you can be virtually assured that is has no place there. You can always look at it before you remove it with "cat' or "od". Perhaps it is something you do want, just not in the device filesystem.

Regards!

...JRF...

Re: ghosty file !!!!

Kuntal Gupta — Fri, 16 Sep 2011 13:33:49 GMT

Dear JRF-Sir,

Thanks a lot for your reply.

# rm -i /dev/rdj* << ------ Didn't

BUT

# find /dev -xdev -type f -inum <inum_of_file> -exec rm {} \;

WORKED sucessfully.

There is no issue in the system performance.

Warm Regards...

Kuntal

Re: ghosty file !!!!

James R. Ferguson — Fri, 16 Sep 2011 13:56:30 GMT

Hi (again):

I'm happy to have helped. In this new community, marking a post as solved does not automatically generate a Kudo. Please see:

http://h30499.www3.hp.com/t5/help/faqpage/faq-category-id/kudos#kudos

Regards!

...JRF...

Re: ghostly file, unprintable chars

Dennis Handly — Fri, 16 Sep 2011 16:54:06 GMT

>-rw-rw-rw- 1 root sys 231822848 Jan 21 2010 rdj

Most likely this may be a tarfile? As JRF said, it was created by a typo using /dev/rdj (backspace).