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>