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LNDIR(1) 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 BitKeeper, RCS, SCCS, .svn, CVS and CVS.adm directories are shadowed only if the -with-revinfo -withrevinfo
revinfo 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 BitKeeper, RCS, SCCS, .svn, 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 lndir 1.0.1 LNDIR(1)
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