Runs a script for each file in a directory hierarchy using GNU parallel
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6 years ago
# Diriterator
Runs a script for each file in a directory hierarchy using GNU parallel.
This is useful when converting a lot of media files.
## Instructions
The script requires GNU parallel to be installed.
Let's assume you have a directory tree like this
```
music_lib_mp3
Artist 1
Album 1
Song 1.mp3
Song 2.mp3
...
Album 2
Song 1.mp3
Song 2.mp3
...
...
```
and want to convert all files to AAC in parallel and the converted
files should be placed in a similar directory tree:
```
music_lib_aac
Artist 1
Album 1
Song 1.m4a
Song 2.m4a
...
Album 2
Song 1.m4a
Song 2.m4a
...
...
```
Just run:
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```
diriterator \
--base-dir "./music_lib_mp3" --target-dir "./music_lib_aac" \
--filter ".*\.(mp3$)" \
--cmd "mkdir -p \"\$ITERATOR_TARGET_DIR\" && ffmpeg -i \"\$ITERATOR_FULL_PATH\" -c:a libfdk_aac -vbr 4 \"\$ITERATOR_TARGET_DIR/\$ITERATOR_FILE_NAME_WITHOUT_EXTENSION.m4a"
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```
The repository [PKGBUILDs](https://github.com/Martchus/PKGBUILDs) contains
files for building an Arch Linux package.