12 дец 2013
dr_symlinks
20131212
NAME
dr_symlinks — maintain a symlink forest
SYNOPSIS
dr_symlinks
DESCRIPTION
For each pair directory/subdirectory under each word in DR_SL_TARGETS, a
directory and symlink DR_SL_SOURCE/directory/symlink is created (or adjusted).
The script is implemented as a wrapper around oggsymlinks, by Wessel Dankers.
EXAMPLE
If, in the configuration file $HOME/.draai/symlinksrc, DR_SL_SOURCE is set to
/srv/audio and DR_SL_TARGETS is set to "../data/a ../data/b", while directories
/srv/data/a/And_You_Will_Know_Us_By_the_Trail_of_Dead/Source_Tags_And_Codes/
/srv/data/a/And_You_Will_Know_Us_By_the_Trail_of_Dead/The_Century_of_Self/
/srv/data/a/John_Coltrane/A_Love_Supreme/
/srv/data/b/John_Coltrane/Giant_Steps/
/srv/data/b/Tinariwen/Amassakoul/
exist, the following directories holding the following symlinks will get created
in /srv/audio/ :
And_You_Will_Know_Us_By_the_Trail_of_Dead/Source_Tags_And_Codes ->
../../../a/And_You_Will_Know_Us_By_the_Trail_of_Dead/Source_Tags_And_Codes/
And_You_Will_Know_Us_By_the_Trail_of_Dead/The_Century_of_Self ->
../../../a/And_You_Will_Know_Us_By_the_Trail_of_Dead/The_Century_of_Self/
John_Coltrane/A_Love_Supreme -> ../../../a/John_Coltrane/A_Love_Supreme/
John_Coltrane/Giant_Steps -> ../../../b/John_Coltrane/Giant_Steps/
Tinariwen/Amassakoul -> ../../../b/Tinariwen/Amassakoul/
All dangling symlinks and empty directories (if any) under /srv/audio/ will get
removed. This script is idempotent.
ANOTHER EXAMPLE
joostvb@hille:~% ls media/usb/audio/200504/Al_Green
The_Very_Best_Of/
joostvb@hille:~% ls media/usb/audio/
200504/ 200708/ 200801/ 200805/ 200807/ 200812/ 200910/ 201005/ 201009/
200609/ 200712/ 200803/ 200806/ 200808/ 200905/ 201004/ 201006/
joostvb@hille:~% cat .draai/symlinksrc.usb
DR_SL_SOURCE=~/media/audio
DR_SL_TARGETS="$( cd $DR_SL_SOURCE && ls -d ../usb/audio/* )"
joostvb@hille:~% DR_SL_RCFILE=.draai/symlinksrc.usb dr_symlinks
joostvb@hille:~% ls -l media/audio/Al_Green
total 0
lrwxrwxrwx 1 joostvb joostvb 48 2011-03-11 09:12 The_Very_Best_Of -> ../../usb/audio/200504/Al_Green/The_Very_Best_Of/
ENVIRONMENT
dr_symlinks honors booleans: DR_SL_VERBOSE, DR_DEBUG and DR_DRYRUN and strings:
DR_SL_RCFILE, DR_SL_TARGETS and DR_SL_SOURCE.
FILES, CONFIGURATION
All configuration variables (see ENVIRONMENT) can be set in
~/.draai/symlinksrc. This rc-file is sourced as a shell script.
If DR_SL_RCFILE is set, its value is assumed to be the dr_symlinks rc-file.
COPYRIGHT AND LICENSE
This manpage is copyright 2009, 2011 Joost van Baal-Ilić <joostvb-draai@mdcc.cx>.
Draai is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License, as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version. This program is distributed WITHOUT ANY WARRANTY. You should have
received a copy of the GNU General Public License along with draai. If not,
see http://www.gnu.org/licenses/.
AUTHOR
Joost van Baal-Ilić <joostvb-draai@mdcc.cx>