topic Re: Finding hardlinked file. in Operating System - HP-UX

Finding hardlinked file.

echong — Mon, 21 Aug 2000 18:22:38 GMT

I want to list all files in a directory that is hardlinked to any other files anywhere in my system. Is there a simple command to do that besides writing a script?

Thanks.

Re: Finding hardlinked file.

Antoanetta Naghiu — Mon, 21 Aug 2000 18:26:14 GMT

find / -name -exec ls -F |grep @ {} ;
(see man ls, F option).

Re: Finding hardlinked file.

Anthony deRito — Mon, 21 Aug 2000 18:36:03 GMT

Eric, i can give you what I know. The difference between the listing of a hard link vs a soft link is in the second field of a long list. The second field shows you the number of links if any.

For example:

#touch /tmp/test
#ll /tmp/test
-rw-rw-r-- 1 root sys 0 Aug 21 15:26 test

#ln /tmp/test /tmp/test5
#ll /tmp/test*
-rw-rw-r-- 2 root sys 0 Aug 21 15:26 test
-rw-rw-r-- 2 root sys 0 Aug 21 15:26 test5

Notice field 2 changed from 1 to 2. You know that a hard link has been created and there are now 2 filenames pionting to the same data.

I won't get into using this info in a script but just thought I would share it.

Tony

Re: Finding hardlinked file.

RikTytgat — Mon, 21 Aug 2000 20:07:46 GMT

Hi,

Hard linked files must always be on the same file system.

First, determine the inode number of the file for which you want to determine the hard linked files:

ls -i your_filename

The inode is listed.

Then, use find to find all files having that same inode number:

find /your/directory -xdev -inum your_inode

That should do the trick.

Bye,
Rik.

Re: Finding hardlinked file.

Wodisch — Tue, 22 Aug 2000 20:18:25 GMT

Eric,
how about something like:

dev=`devnm .| cut -d' ' -f1`
ls -i1 * | while read inum name ; do echo $name; ncheck -a -i $inum $dev ";"; done

that should find all hardlinks of all files in your working directory.
HTH,
Wodisch