zindex

`zindex` is a tool designed for creating and querying indexes on compressed, line-based text files, significantly enhancing data retrieval speed from large gzipped log files. It allows users to generate indices based on regular expressions, fields, or external commands, while maintaining small index sizes (about 10% of the compressed file size) for efficient random access. Additionally, it supports querying via an associated command-line utility, `zq`, enabling rapid access to specific lines or indexed entries.