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lex(1) [bsd man page]

LEX(1)							      General Commands Manual							    LEX(1)

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 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. EXAMPLE
lex lexcommands would draw lex instructions from the file lexcommands, and place the output in lex.yy.c %% [A-Z] putchar(yytext[0]+'a'-'A'); [ ]+$ ; [ ]+ putchar(' '); is an example of a lex program that would be put into a lex command file. This program converts upper case to lower, removes blanks at the end of lines, and replaces multiple blanks by single blanks. SEE ALSO
yacc(1), sed(1) M. E. Lesk and E. Schmidt, LEX - Lexical Analyzer Generator 7th Edition April 14, 1986 LEX(1)

Check Out this Related Man Page

libl(3LIB)							Interface Libraries							libl(3LIB)

libl - lex library SYNOPSIS
cc [ flag... ] file... [ library... ] DESCRIPTION
Functions in this library provide user interfaces to the lex(1) library. INTERFACES
The shared object provides the public interfaces defined below. See intro(3) for additional information on shared object inter- faces. allprint allprint_w main sprint sprint_w yyless yyless_e yyless_w yyracc yyreject yyreject_e yyreject_w yywrap FILES
/usr/lib/ shared object /usr/lib/64/ 64-bit shared object ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsl (32-bit) | +-----------------------------+-----------------------------+ | |SUNWcslx (64-bit) | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
lex(1), intro(3), attributes(5) SunOS 5.10 22 May 2003 libl(3LIB)
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