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Common File Extensions

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.X File Extension

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File Type

Lex Source Code File

Popularity

Average

Category

Developer Files

File Description

Source code written in the Lex programming language (a standard lexical analyzer for Unix); may be processed with the lex utility included with most Unix distributions to generate a C program; the output is often written to a file named "lex.yy.c."

Program(s) that open x files

Windows

Flex for Windows

MKS Lex & Yacc

Editable with a text editor

Linux

lex

Editable with a text editor