# find > Find files under the given directory tree, recursively - find files by extension `find {{root_path}} -name {{'*.py'}}` - run a command for each file - use {} within the command to access the filename `find {{root_path}} -name {{'*.py'}} -exec {{wc -l {} }}\;` `find {{root_path}} -name {{'*.py'}} -exec {{rm {} }}\;` - find files modified since a certain time `find {{root_path}} -name {{'*.py'}} -mtime {{-1d}}`