Others
Change tag of audio files
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Ubuntu:
sudo apt instal puddletag
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Fedora:
sudo dnf instal puddletag
Extract pdf to png - one image per file
convert -density 300 file.pdf page_%04d.jpg
Ubuntu:
sudo apt instal puddletag
Fedora:
sudo dnf instal puddletag
convert -density 300 file.pdf page_%04d.jpg