lsql-csv is a tool for small CSV file data querying from a shell with short queries. It makes it possible to work with small CSV files like with a read-only relational databases. The tool implements a new language LSQL similar to SQL, specifically designed for working with CSV files in a shell. LSQL aims to be a more lapidary language than SQL. Its design purpose is to enable its user to quickly write simple queries directly to the terminal.