Install flex-doc by entering the following commands in the terminal:
sudo apt update sudo apt install flex-doc
Description:
Documentation for flex (a fast lexical analyzer generator)
Flex is a tool for generating scanners: programs which recognized lexical patterns in text. It reads the given input files for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates as output a C source file, lex.yy.c, which defines a routine yylex(). This file is compiled and linked with the -lfl library to produce an executable. When the executable is run, it analyzes its input for occurrences of the regular expressions. Whenever it finds one, it executes the corresponding C code. . This package contains the HTML documentation for flex.
Homepage: https://github.com/westes/flex
Version: 2.6.4-6
Section: doc