I'm a fan of echo, especially for loops: for i in some/files/*; do echo mkdir -p ${i%%.*}; echo mv "${i}" "${i%%.*}/${i}"; done That way I can see what it's

I'm a fan of echo, especially for loops: for i in some/files/*; do echo mkdir -p ${i%%.*}; echo mv "${i}" "${i%%.*}/${i}"; done That way I can see what it's gonna evaluate to first.