过滤所有子目录中的文件并以相同的名称保存？

Question

How to remove duplicate lines in every file in directory and save the fixed data in the same file with a single line command?

the following do not work:

   find . -type f -execdir cat {} | sort | uniq > {} \; 

   find . -type f | xargs -I{} cat {} | sort | uniq > {}

   find . -type f | xargs -I{} cat {} | sort | uniq > {}.new && mv {}.new {}

the '>' symbol breaks the chain..

Answer 1

Put a shell wrapper in the exec:

find . -type f -exec sh -c 'sort "$1" | uniq > "$1.new" && mv "$1.new" "$1"' _ {} \;