# bfs > Breadth-first search for your files. > More information: . - Find files by extension: `bfs {{root_path}} -name '{{*.ext}}'` - Find files matching multiple path/name patterns: `bfs {{root_path}} -path '{{**/path/**/*.ext}}' -or -name '{{*pattern*}}'` - Find directories matching a given name, in case-insensitive mode: `bfs {{root_path}} -type d -iname '{{*lib*}}'` - Find files matching a given pattern, excluding specific paths: `bfs {{root_path}} -name '{{*.py}}' -not -path '{{*/site-packages/*}}'` - Find files matching a given size range, limiting the recursive depth to "1": `bfs {{root_path}} -maxdepth 1 -size {{+500k}} -size {{-10M}}` - Run a command for each file (use `{}` within the command to access the filename): `bfs {{root_path}} -name '{{*.ext}}' -exec {{wc -l}} {} \;` - Find all files modified today and pass the results to a single command as arguments: `bfs {{root_path}} -daystart -mtime {{-1}} -exec {{tar -cvf archive.tar}} {} \+` - Find empty files (0 byte) or directories and delete them verbosely: `bfs {{root_path}} -type {{f|d}} -empty -delete -print`