03-26-2008
soft link for directory in root FS
Hi,
In root folder there is one directory "/usr/sap/P38/TRX00/index" as the data is going to increase so to aviod root fs become 100% full ,we have to create one soft link that would point to another point mount created with on same disk ultimatly that New Fs(/test) will store data instead of root .But i dn't understand how to create it i.e what would be the source and link ,and link would be file or directory becasue if we create as dir it will create link inside the index directory.
Please help as it is very necessary.Thanks in advance.
Regards,
solaris123
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LNDIR(1) General Commands Manual LNDIR(1)
NAME
lndir - create a shadow directory of symbolic links to another directory tree
SYNOPSIS
lndir [ -silent ] [ -ignorelinks ] [ -withrevinfo ] fromdir [ todir ]
DESCRIPTION
The lndir program makes a shadow copy todir of a directory tree fromdir, except that the shadow is not populated with real files but
instead with symbolic links pointing at the real files in the fromdir directory tree. This is usually useful for maintaining source code
for different machine architectures. You create a shadow directory containing links to the real source, which you will have usually
mounted from a remote machine. You can build in the shadow tree, and the object files will be in the shadow directory, while the source
files in the shadow directory are just symlinks to the real files.
This scheme has the advantage that if you update the source, you need not propagate the change to the other architectures by hand, since
all source in all shadow directories are symlinks to the real thing: just cd to the shadow directory and recompile away.
The todir argument is optional and defaults to the current directory. The fromdir argument may be relative (e.g., ../src) and is relative
to todir (not the current directory).
Note that RCS, SCCS, CVS and CVS.adm directories are shadowed only if the -withrevinfo flag is specified.
If you add files, simply run lndir again. New files will be silently added. Old files will be checked that they have the correct link.
Deleting files is a more painful problem; the symlinks will just point into never never land.
If a file in fromdir is a symbolic link, lndir will make the same link in todir rather than making a link back to the (symbolic link) entry
in fromdir. The -ignorelinks flag changes this behavior.
OPTIONS
-silent
Normally lndir outputs the name of each subdirectory as it descends into it. The -silent option suppresses these status messages.
-ignorelinks
Causes the program to not treat symbolic links in fromdir specially. The link created in todir will point back to the corresponding
(symbolic link) file in fromdir. If the link is to a directory, this is almost certainly the wrong thing.
This option exists mostly to emulate the behavior the C version of lndir had in X11R6. Its use is not recommended.
-withrevinfo
Causes any RCS, SCCS, CVS and CVS.adm subdirectories to be treated as any other directory, rather than ignored.
DIAGNOSTICS
The program displays the name of each subdirectory it enters, followed by a colon. The -silent option suppresses these messages.
A warning message is displayed if the symbolic link cannot be created. The usual problem is that a regular file of the same name already
exists.
If the link already exists but doesn't point to the correct file, the program prints the link name and the location where it does point.
X Version 11 Release 6.6 LNDIR(1)