opustags/README.md

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opustags
========
View and edit Opus comments.
The current code quality of this project is in a sorry state, but that might
change in the near future. It is expected to work well though, so please do
open an issue if something doesn't work. New contributions are welcome but make
sure you read CONTRIBUTING.md first.
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Until opustags becomes top-quality software, if it ever does, you might want to
check out these more mature tag editors:
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- [EasyTAG](https://wiki.gnome.org/Apps/EasyTAG)
- [Beets](http://beets.io/)
- [Picard](https://picard.musicbrainz.org/)
- [puddletag](http://docs.puddletag.net/)
- [Quod Libet](https://quodlibet.readthedocs.io/en/latest/)
- [Goggles Music Manager](https://gogglesmm.github.io/)
See also these libraries if you need a lower-level access:
- [TagLib](http://taglib.org/)
- [mutagen](https://mutagen.readthedocs.io/en/latest/)
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Requirements
------------
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* a C++14 compiler,
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* CMake,
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* a POSIX-compliant system,
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* libogg.
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Installing
----------
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opustags is a commonplace CMake project.
Here's how to install it in your .local, under your home:
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=~/.local ..
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make
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make install
Note that you don't need to install opustags in order to run it, as the executable is standalone.
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Documentation
-------------
Usage: opustags --help
opustags [OPTIONS] FILE
opustags OPTIONS FILE -o FILE
Options:
-h, --help print this help
-o, --output write the modified tags to a file
-y, --overwrite overwrite the output file if it already exists
-d, --delete FIELD delete all the fields of a specified type
-a, --add FIELD=VALUE add a field
-s, --set FIELD=VALUE delete then add a field
-D, --delete-all delete all the fields!
-S, --set-all read the fields from stdin
See the man page, `opustags.1`, for extensive documentation.