•readdir — List a directory

•readdir dir gives the table of •metadata with a row for each entry of dir, sorted by path. Each row’s path is dir joined with the entry’s path within dir. A glob on the left keeps the entries whose path within dir matches it, as in "*.csv" •readdir "data". As in a shell, * stays within one directory and ** crosses them. Options on the left: glob, and recurse (1 also lists the entries of subdirectories).

Errors: IO for a directory that can’t be read; DOMAIN for an invalid glob or option.