01-08-2008
Quote:
Originally Posted by
detective linux
i open terminal and join as root
and i wrote ln -s blah blah
then i wrote ls
i see red file called blah blah
but didn't understand what is this can some one explain and is this the way to read it ?
This should fail if blah already exists. If blah is a directory it will create the link in the directory.
Quote:
Originally Posted by
detective linux
what if remove the orginal file of hard link can i still see the content of the file
if its the last reference to the file then the file will be removed.
Quote:
Originally Posted by
detective linux
and can i try to make a hard link to a directory ? To a non-existent file
no
Quote:
Originally Posted by
detective linux
another more questions hope not one get angry coze i ask much
what if i try to change the permissions of the original file with chmod, or update its modification time with touch is there is something gunna happen for the links
the links all point to the same file so updating the permissions will appear like all links were changed. you cannot however change the permissions of a symbolic link.
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link(1M) System Administration Commands link(1M)
NAME
link, unlink - link and unlink files and directories
SYNOPSIS
/usr/sbin/link existing-file new-file
/usr/xpg4/bin/link existing-file new-file
/usr/sbin/unlink file
DESCRIPTION
The link and unlink commands link and unlink files and directories. Only super-users can use these commands on directories.
Use link to create a new file that points to an existing file. The existing-file and new-file operands specify the existing file and
newly-created files. See OPERANDS.
link and unlink directly invoke the link(2) and unlink(2) system calls, performing exactly what they are told to do and abandoning all
error checking. This differs from the ln(1) command. See ln(1).
While linked files and directories can be removed using unlink, it is safer to use rm(1) and rmdir(1) instead. See rm(1) and rmdir(1).
/usr/xpg4/bin/link
If the existing file being hard linked is itself a symbolic link, then the newly created file (new-file) will be a hard link to the file
referenced by the symbolic link, not to the symbolic link object itself (existing-file).
OPERANDS
The following operands are supported:
existing-file Specifies the name of the existing file to be linked.
file Specifies the name of the file to be unlinked.
new-file Specifies the name of newly created (linked) file.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of link: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
/usr/xpg4/bin/link
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWxcu4 |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
ln(1), rm(1), link(2), unlink(2), attributes(5), environ(5), standards(5)
SunOS 5.10 9 Oct 2002 link(1M)