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Shell Programming and Scripting
In ksh script what is this BEGIN and END in this function?
Post 302947410 by cfajohnson on Wednesday 17th of June 2015 07:47:48 PM
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Why would you need to use this in a script?
Why can't you just use print to print out what you want printed in the begining and print for what you want at the end.
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test file
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LEARN ABOUT MINIX
yacc
YACC(1) General Commands Manual YACC(1) NAME
yacc - an LALR(1) parser generator SYNOPSIS
yacc [ -dlrtv ] [ -b file_prefix ] [ -p symbol_prefix ] filename DESCRIPTION
Yacc reads the grammar specification in the file filename and generates an LR(1) parser for it. The parsers consist of a set of LALR(1) parsing tables and a driver routine written in the C programming language. Yacc normally writes the parse tables and the driver routine to the file y.tab.c. The following options are available: -b file_prefix The -b option changes the prefix prepended to the output file names to the string denoted by file_prefix. The default prefix is the character y. -d The -d option causes the header file y.tab.h to be written. -l If the -l option is not specified, yacc will insert #line directives in the generated code. The #line directives let the C compiler relate errors in the generated code to the user's original code. If the -l option is specified, yacc will not insert the #line directives. #line directives specified by the user will be retained. -p symbol_prefix The -p option changes the prefix prepended to yacc-generated symbols to the string denoted by symbol_prefix. The default prefix is the string yy. -r The -r option causes yacc to produce separate files for code and tables. The code file is named y.code.c, and the tables file is named y.tab.c. -t The -t option changes the preprocessor directives generated by yacc so that debugging statements will be incorporated in the compiled code. -v The -v option causes a human-readable description of the generated parser to be written to the file y.output. If the environment variable TMPDIR is set, the string denoted by TMPDIR will be used as the name of the directory where the temporary files are created. FILES
y.code.c y.tab.c y.tab.h y.output /tmp/yacc.aXXXXXX /tmp/yacc.tXXXXXX /tmp/yacc.uXXXXXX DIAGNOSTICS
If there are rules that are never reduced, the number of such rules is reported on standard error. If there are any LALR(1) conflicts, the number of conflicts is reported on standard error. 4.3 Berkeley Distribution July 15, 1990 YACC(1)