Format all XML files in a directory and save them in a subdirectory

问题

I'm trying to write a script that will look through a directory, find all the XML files, run them through xmllint, and save the formatted results to a file of the same name in a subdirectory called formatted. Here's the script I have so far:

find . -maxdepth 1 -type f -iname "*.xml" | xargs -I '{}' xmllint --format '{}' > formatted/'{}'

This works, to an extent. The subdirectory ends up with one file, named "{}", which is just the results of the final file that was processed through xmllint. How can I get the files to write properly to the subdirectory?

回答1:

The file named {} that you see should probably contain all of the formatted files together. The reason for this is that the redirection that you are using is not actually a part of the command that xargs sees. The redirection is interpreted by the shell, so what it does is run

find . -maxdepth 1 -type f -iname "*.xml" | xargs -I '{}' xmllint --format '{}'

and save the output to the file named formatted/{}.

Try using the --output option of xmllint instead of the redirection:

... | xargs -I '{}' xmllint --format '{}' --output formatted/'{}'

You can also avoid calling xargs by using the -exec option of find:

find . -maxdepth 1 -type f -iname "*.xml" -exec xmllint --format '{}' --output formatted/'{}' \;

来源：https://stackoverflow.com/questions/20577191/format-all-xml-files-in-a-directory-and-save-them-in-a-subdirectory