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Top Forums UNIX for Dummies Questions & Answers Shell script for search and replace by field Post 302707765 by chandrath on Sunday 30th of September 2012 12:18:40 AM
Old 09-30-2012
Shell script for search and replace by field

Hi,
I have an input file with below data and rules file to apply search and replace by each field in the input based on exact value or pattern.
Could you please help me with unix script to read input file and rules file and then create the output and reject files based on the rules file.
Input file:
Code:
field1  field2
rc11    rc12
rc$21  rc#22
XX31   yy32
rc41    r!42

rules file:
Code:
field   search   condition   replace
field1 XX         Equals      rc
field1  $          contains   
field2  #          contains
field2  !           contauns  c
field2 yy          equals      rc

Output
Code:
field1 field2
rc11   rc12
rc21   rc22
rc31  rc32
rc41   rc42

reject file:
Code:
field1 field2
rc$21 rc#22
XX31 yy32
rc41 r!42

Appreciate your help with this.

Thank you!

Last edited by Scrutinizer; 09-30-2012 at 04:48 PM.. Reason: code tags
 

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AUSEARCH_ADD_INTERPRETED_ITEM(3)				  Linux Audit API				  AUSEARCH_ADD_INTERPRETED_ITEM(3)

NAME
ausearch_add_interpreted_item - build up search rule SYNOPSIS
#include <auparse.h> int ausearch_add_interpreted_item(auparse_state_t *au, const char *field, const char *op, const char *value, ausearch_rule_t how); DESCRIPTION
ausearch_add_interpreted_item adds one search condition to the current audit search expression. The search conditions can then be used to scan logs, files, or buffers for something of interest. The field value is the field name that the value will be checked for. The op vari- able describes what kind of check is to be done. Legal op values are: exists just check that a field name exists = locate the field name and check that the value associated with it is equal to the value given in this rule. != locate the field name and check that the value associated with it is NOT equal to the value given in this rule. The value parameter is compared to the interpreted field value (the value that would be returned by auparse_interpret_field(3)). The how value determines how this search condition will affect the existing search expression if one is already defined. The possible val- ues are: AUSEARCH_RULE_CLEAR Clear the current search expression, if any, and use only this search condition. AUSEARCH_RULE_OR If a search expression E is already configured, replace it by (E || this_search_condition). AUSEARCH_RULE_AND If a search expression E is already configured, replace it by (E && this_search_condition). RETURN VALUE
Returns -1 if an error occurs; otherwise, 0 for success. SEE ALSO
ausearch_add_expression(3), ausearch_add_item(3), ausearch_add_timestamp_item(3), ausearch_add_regex(3), ausearch_set_stop(3), ause- arch_clear(3), ausearch_next_event(3), ausearch-expression(5). AUTHOR
Steve Grubb Red Hat Nov 2007 AUSEARCH_ADD_INTERPRETED_ITEM(3)
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