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lndir - Online in the Cloud

Run lndir in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command lndir that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

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, CVS, CVS.adm, .git, .hg, RCS, SCCS, and .svn directories are shadowed
only if the -withrevinfo flag is specified. Files with names ending in ~ are never
shadowed.

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 source control manager subdirectories (those named BitKeeper, CVS,
CVS.adm, .git, .hg, RCS, SCCS, or .svn) 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.

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