lq-text is a software tool for retrieving full-text data.
However, it is worth noting that lq-text isn't ACID-compliant, which means it isn't technically a database, as well as the fact that the phrase "information retrieval" is quite broad. But, with lq-text, you can extract information from the files you've matched, including highlighting every occurrence of the matched words or creating keyword-in-context (KWIC) indexes.
Overall, lq-text can be seen as a search engine that is used in text information retrieval systems, using a fulltext index as its basis. There are a variety of commands to utilize, such as the ability to add files to the database at any given time using lqaddfile, get information about indexed files with lqfile, look up phrases with lqphrase, and combine phrase searches with lqrank.
Additionally, you can utilize lqquery to support wildcards in phrases, enabling you to sort through your results in a more efficient manner. By using lqkwic, you can create KWIC indexes that are both helpful and fun. You can also use lqshow to view matches on your screen using curses, as well as search through the stored vocabulary with lqwordlist.
Lastly, lq-text comes equipped with two front ends - a curses-based front end, and a shell-script front end that allows you to fetch and print files by lq-text FID or document name. Overall, lq-text is a useful tool that can be used to find relevant information within your files in a streamlined and efficient way.
Version 1.17: N/A