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Initial import of the CDE 2.1.30 sources from the Open Group.

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Peter Howkins
2012-03-10 18:21:40 +00:00
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cde/util/scripts/lndir.man Normal file
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.\" $XConsortium: lndir.man /main/2 1995/07/17 10:49:35 drk $
.TH LNDIR 1 "Release 5" "X Version 11"
.SH NAME
lndir \- create a shadow directory of symbolic links to another directory tree
.SH SYNOPSIS
.B lndir
fromdir [todir]
.SH DESCRIPTION
.I Lndir
makes a shadow copy
.I todir
of a directory tree
.I fromdir,
except that the shadow is not
populated with real files but instead with symbolic links pointing at
the real files in the
.I 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 NFS
mounted from a machine of a different architecture, and then recompile
it. The object files will be in the shadow directory, while the
source files in the shadow directory are just symlinks to the real
files.
.PP
This 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 shadow directories are symlinks to the real thing: just cd
to the shadow directory and recompile away.
.PP
The
.I todir
argument is optional and defaults to the current directory. The
.I fromdir
argument may be relative (e.g., ../src) and is relative to
.I todir
(not the current directory).
.PP
.ft B
Note that RCS and SCCS directories are not shadowed.
.ft
.PP
Note that if you add files, you must run
.I lndir
again. Deleting files is a more painful problem; the symlinks will
just point into never never land.
.SH BUGS
.I Patch
gets upset if it cannot change the files. You should never run
.I patch
from a shadow directory anyway.
.PP
You need to use something like
.nf
find todir -type l -print | xargs rm
.fi
to clear out all files before you can relink (if fromdir moved, for instance).
Something like
.nf
find . \\! -type d -print
.fi
will find all files that are not directories.