12-31-2008
regular expressions using perl script
i have a set of regular expressions. The words in the regular expression should be used to replace the i/p with hyphens '---'. i need perl script to evaluate these regular expression. the words in the regexes when found in the i/p file should be replaced with hyphens '---'.
the set of regular expressions are:
1.\bTAKE\s?|THANK|DANC(ER|ED|ING|ME|S)\b
2.\b(HELL|HARD|J(AC|ER)K-OFF|JI(SM|Z(M)?))\b
3.\b(SKUL|SCHOOL)?GO(ER(S)?|IN(G)?)?\b
4.\b(TRICK(Y|S)?|TOLL(S)?|SPUNK|TWAT)\b
5.STAK(ES)?\s?HOLDER(S)?\s?
6.\PITCH(ES|IN|ING)?+\s?SALE(S)
7.\bBLOW\s?(JOB|JOBS)
The words in the regexes are in uppercase, but the script should take care of both upper and lower cases.
please help me with the exact script, because i'm very new to perl scripting.
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LEARN ABOUT ULTRIX
re_comp
regex(3) Library Functions Manual regex(3)
Name
re_comp, re_exec - regular expression handler
Syntax
char *re_comp(s)
char *s;
re_exec(s)
char *s;
Description
The subroutine compiles a string into an internal form suitable for pattern matching. The subroutine checks the argument string against
the last string passed to
The subroutine returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
The subroutine returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last compiled
regular expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both and may have trailing or embedded newline characters; they are terminated by nulls. The regular expressions
recognized are described in the manual entry for given the above difference.
Diagnostics
The subroutine returns -1 for an internal error.
The subroutine returns one of the following strings if an error occurs:
No previous regular expression
Regular expression too long
unmatched (
missing ]
too many () pairs
unmatched )
See Also
ed(1), ex(1), egrep(1), fgrep(1), grep(1)
regex(3)