Find files with SQL-like queries. More information: https://github.com/jhspetersson/fselect.
fselect size, path from path/to/directory where name = '*.cfg' or name = '*.tmp'
fselect path from path/to/directory where width = height
fselect path from path/to/directory where genre = Rap and bitrate = 320 and mp3_year lt 2000
fselect size, path from path/to/directory limit 5 into json
fselect "MIN(size), MAX(size), AVG(size), SUM(size), COUNT(*) from path/to/directory"