topic Re: Link two Directories in Operating System - HP-UX

Link two Directories

George Nikoloudis_1 — Thu, 06 Dec 2001 09:24:20 GMT

Hello Experts
Can you tell me how can I link two directories?
e.g.

/mnt1a/george/data->mnt2a/root/data

Re: Link two Directories

Deepak Extross — Thu, 06 Dec 2001 09:27:52 GMT

Hi,

ln -s

Re: Link two Directories

Frederic Sevestre — Thu, 06 Dec 2001 09:28:18 GMT

Hi,

ln -s /mnt2a/root/data /mnt1a/george/data

regards
Fr??d??ric

Re: Link two Directories

Etienne Holm — Thu, 06 Dec 2001 09:30:18 GMT

Hi
go to the dir you wnat the linked dir to be
cd mnt2a/root
then do
ln -s /mnt1a/george/data data

Re: Link two Directories

Steven Sim Kok Leong — Thu, 06 Dec 2001 09:31:21 GMT

Hi,

Assuming that mnt2a/root/data currently contains the data and /mnt1a/george/data is the link,

If you want a hard-link,

# ln /mnt2a/root/data /mnt1a/george/data

If you want a soft-link,

# ln -s /mnt2a/root/data /mnt1a/george/data

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

Re: Link two Directories

federico_3 — Thu, 06 Dec 2001 09:36:53 GMT

to get /mnt1a/george/data-> /mnt2a/root/data
type:

ln -s /mnt2a/root/data /mnt1a/george/data

Re: Link two Directories

Darrell Allen — Thu, 06 Dec 2001 14:57:29 GMT

Hi George,

One minor point to add: If /mnt1a/george/data already exists, the ln (with or without -s) command will fail.

Darrell

Re: Link two Directories

Roger Baptiste — Thu, 06 Dec 2001 15:07:50 GMT

<mnt2a/root/data >>

cd /mnt1a/george
ll data (just to confirm there is no such directory existing; if it is move or remove it)
ln -s data /mnt2a/root/data

Another point, do not worry about the permissions of /mnt1a/george/data . Irrespective of what it is the permission of the actual directory will be counted during access.

HTH
raj

Re: Link two Directories

Victor_5 — Thu, 06 Dec 2001 16:25:02 GMT

Regarding link, there are hard link and symbolic link, for directory link, you only can use the later one.

Use the ln command with -s to create a symbolic link. The first argument identifies the existing file that you wish to link to. Additional arguments specify the path names of the symbolic links you wish to create to the existing file.

In your case, it is
ln -s /mnt2a/root/date /mnt1a/george/date

Shawn

Re: Link two Directories

Sanjay_6 — Thu, 06 Dec 2001 16:41:47 GMT

Hi George,

Try,

ln -s /mnt2a/root/data /mnt1a/george/data

hope this helps.

Regds

Re: Link two Directories

Darrell Allen — Thu, 06 Dec 2001 16:50:10 GMT

Hi all,

My earlier reply definitely was not a good one. Shawn points out correctly that ln (without -s) will fail if the source is a directory. You must use ln -s on directories.

To clarify (hopefully) the point I was trying to make earlier:
ln -s will fail if the destination exists and is a file. ln -s will succeed if the destination exists and is a directory however the link will be created subordinate to the destination directory. Examples:

# ll
total 0
drwxr-xr-x 2 root sys 96 Dec 6 11:39 d
-rw-r--r-- 1 root sys 0 Dec 6 11:40 e
drwxr-xr-x 2 root sys 96 Dec 6 11:40 f
# ln d e
ln: directory
# ln d f
ln: directory
# ln -s d e
ln: e exists
# ln -s d f
# ll
total 0
drwxr-xr-x 2 root sys 96 Dec 6 11:39 d
-rw-r--r-- 1 root sys 0 Dec 6 11:40 e
drwxr-xr-x 2 root sys 96 Dec 6 11:40 f
# ll f
lrwxr-xr-x 1 root sys 1 Dec 6 11:40 d -> d

Sorry for my earlier poor post. I added confusion to the issue instead of clarification.

Darrell

Re: Link two Directories

Kurtkarl — Thu, 06 Dec 2001 17:01:10 GMT

hi,

for hard link
ln / /
for soft (symbolic) link
ln -s / /

note: ln does not create hard links across
filesystems.
joey

Re: Link two Directories

Ron Freeland — Thu, 17 Jul 2003 15:29:47 GMT

Hello

The manpage for ln shows as if 2 directories can be hard linked, but in the manpage it states: "The ln command does not permit hard links to a directory."
To link directories the -s option must be used.