Hard linked files cannot be modified
Hard linked files cannot be modified
- Subject: Hard linked files cannot be modified
- From: Prady K <email@hidden>
- Date: Wed, 16 Nov 2005 00:28:23 -0800
Hi
Apologies if this posting is out of the scope of this mailing list.
But I could not find any better mailing list to post this.
I have a sort of newbie question about hard links to a file. I create
a hard link to image file using ln. After this I cannot modify the
original file in Preview or any other application for that matter.
The Preview app in OS X just says document cannot be saved. After
that even after I unlink the file the original file also cannot be
modified at all. I understand the concept of the link but I am
wondering why it is not allowing to modify the files that have being
hard linked.
However if I type a text file using vi editor and then create a hard
link to that file and then open the file using the link and edit it
using TextEdit or vi it saves the file but it breaks the hard link.
i.e. the link count becomes 1.
Before ln
=======
-rw-r--r-- 1 admin admin 20 Nov 16 00:25 test.txt
After ln
=======
-rw-r--r-- 2 admin admin 20 Nov 16 00:25 test.txt
-rw-r--r-- 2 admin admin 20 Nov 16 00:25 testlink.txt
After editing testlink.txt in TextEdit
=======
-rw-r--r-- 1 admin admin 20 Nov 16 00:25 test.txt
-rw-r--r-- 1 admin admin 27 Nov 16 00:26 testlink.txt
TIA
Prady K
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