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lex(1) [v7 man page]

LEX(1)							      General Commands Manual							    LEX(1)

NAME
lex - generator of lexical analysis programs SYNOPSIS
lex [ -tvfn ] [ file ] ... DESCRIPTION
Lex generates programs to be used in simple lexical analyis of text. The input files (standard input default) contain regular expressions to be searched for, and actions written in C to be executed when expressions are found. A C source program, `lex.yy.c' is generated, to be compiled thus: cc lex.yy.c -ll This program, when run, copies unrecognized portions of the input to the output, and executes the associated C action for each regular expression that is recognized. The following lex program converts upper case to lower, removes blanks at the end of lines, and replaces multiple blanks by single blanks. %% [A-Z] putchar(yytext[0]+'a'-'A'); [ ]+$ [ ]+ putchar(' '); The options have the following meanings. -t Place the result on the standard output instead of in file `lex.yy.c'. -v Print a one-line summary of statistics of the generated analyzer. -n Opposite of -v; -n is default. -f `Faster' compilation: don't bother to pack the resulting tables; limited to small programs. SEE ALSO
yacc(1) M. E. Lesk and E. Schmidt, LEX - Lexical Analyzer Generator LEX(1)

Check Out this Related Man Page

ml-ulex(1)						      General Commands Manual							ml-ulex(1)

NAME
ml-ulex - lexer generator for Standard ML SYNOPSIS
ml-ulex [--dot] [--dump] [--match] [--ml-lex-mode] [--minimize] file DESCRIPTION
This manual page documents briefly the ml-ulex command. This manual page was written for the Debian distribution because the original pro- gram does not have a manual page. The ml-ulex script is part of the SML/NJ CM (Compilation and Library Manager) that is used to generate standalone programs. OPTIONS
A summary of some of the options is included below. --dot Generate DOT output (for graphviz). --match Enter interactive matching mode. --ml-lex-mode Operate in ml-lex compatibility mode. SEE ALSO
sml(1), ml-antlr(1), ml-lex(1), ml-yacc(1). The programs are documented fully by CM: The SML/NJ Compilation and Library Manager, User Manual, Matthias Blume, which is available via <http://cm.bell-labs.com/cm/cs/what/smlnj/doc/CM/new.pdf>. AUTHOR
This manual page was written by Daniel Moerner <dmoerner@gmail.com>, for the Debian GNU/Linux system (but may be used by others). September 4, 2009 ml-ulex(1)
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