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need some info about symbolic link and hard link

 
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Old 01-08-2008
need some info about symbolic link and hard link
hello folks
how y'all doin


well i have some questions about symbolic link and hard link

hope some one answer me

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 ?

what if remove the orginal file of hard link can i still see the content of the file

and can i try to make a hard link to a directory ? To a non-existent file

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

that's what i wanna to know

thanks for all people who's gonna see the topic and thanks for who's gonna answer my questions
 
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LEARN ABOUT BSD

ln

LN(1)							      General Commands Manual							     LN(1)

NAME

       ln - make links

SYNOPSIS

       ln [ -s ] sourcename [ targetname ]
       ln [ -s ] sourcename1 sourcename2 [ sourcename3 ... ] targetdirectory

DESCRIPTION

       A  link	is  a  directory entry referring to a file; the same file (together with its size, all its protection information, etc.)  may have
       several links to it.  There are two kinds of links: hard links and symbolic links.

       By default ln makes hard links.	A hard link to a file is indistinguishable from the original directory entry; any changes to  a  file  are
       effective independent of the name used to reference the file.  Hard links may not span file systems and may not refer to directories.

       The  -s	option	causes	ln to create symbolic links.  A symbolic link contains the name of the file to which it is linked.  The referenced
       file is used when an open(2) operation is performed on the link.  A stat(2) on a symbolic link will return the linked-to file; an  lstat(2)
       must  be  done  to  obtain information about the link.  The readlink(2) call may be used to read the contents of a symbolic link.  Symbolic
       links may span file systems and may refer to directories.

       Given one or two arguments, ln creates a link to an existing file sourcename.  If targetname is given, the link has that  name;	targetname
       may  also  be a directory in which to place the link; otherwise it is placed in the current directory.  If only the directory is specified,
       the link will be made to the last component of sourcename.

       Given more than two arguments, ln makes links in targetdirectory to all the named source files.	The links made will have the same name	as
       the files being linked to.

SEE ALSO

       rm(1), cp(1), mv(1), link(2), readlink(2), stat(2), symlink(2)

4th Berkeley Distribution					  April 10, 1986							     LN(1)