1LNDIR(1) General Commands Manual LNDIR(1)
2
6 lndir - create a shadow directory of symbolic links to another direc‐
7 tory tree
8
10 lndir [ -silent ] [ -ignorelinks ] [ -withrevinfo ] fromdir [ todir ]
11
13 The lndir program makes a shadow copy todir of a directory tree
14 fromdir, except that the shadow is not populated with real files but
15 instead with symbolic links pointing at the real files in the fromdir
16 directory tree. This is usually useful for maintaining source code for
17 different machine architectures. You create a shadow directory con‐
18 taining links to the real source, which you will have usually mounted
19 from a remote machine. You can build in the shadow tree, and the
20 object files will be in the shadow directory, while the source files in
21 the shadow directory are just symlinks to the real files.
22 This scheme has the advantage that if you update the source, you need
24 not propagate the change to the other architectures by hand, since all
25 source in all shadow directories are symlinks to the real thing: just
26 cd to the shadow directory and recompile away.
27 The todir argument is optional and defaults to the current directory.
29 The fromdir argument may be relative (e.g., ../src) and is relative to
30 todir (not the current directory).
31 Note that BitKeeper, CVS, CVS.adm, .git, .hg, RCS, SCCS, and .svn
33 directories are shadowed only if the -withrevinfo flag is specified.
34 Files with names ending in ~ are never shadowed.
35 If you add files, simply run lndir again. New files will be silently
37 added. Old files will be checked that they have the correct link.
38 Deleting files is a more painful problem; the symlinks will just point
40 into never never land.
41 If a file in fromdir is a symbolic link, lndir will make the same link
43 in todir rather than making a link back to the (symbolic link) entry in
44 fromdir. The -ignorelinks flag changes this behavior.
45
47 -silent
48 Normally lndir outputs the name of each subdirectory as it
49 descends into it. The -silent option suppresses these status
50 messages.
51 -ignorelinks
53 Causes the program to not treat symbolic links in fromdir spe‐
54 cially. The link created in todir will point back to the corre‐
55 sponding (symbolic link) file in fromdir. If the link is to a
56 directory, this is almost certainly the wrong thing.
57 This option exists mostly to emulate the behavior the C version
59 of lndir had in X11R6. Its use is not recommended.
60 -withrevinfo
62 Causes any source control manager subdirectories (those named
63 BitKeeper, CVS, CVS.adm, .git, .hg, RCS, SCCS, or .svn) to be
64 treated as any other directory, rather than ignored.
65
67 The program displays the name of each subdirectory it enters, followed
68 by a colon. The -silent option suppresses these messages.
69 A warning message is displayed if the symbolic link cannot be created.
71 The usual problem is that a regular file of the same name already
72 exists.
73 If the link already exists but doesn't point to the correct file, the
75 program prints the link name and the location where it does point.
76
78 ln(1).
79X Version 11 lndir 1.0.3 LNDIR(1)