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Full Discussion: complex requirement
Top Forums Shell Programming and Scripting complex requirement Post 302548362 by tnvanathy23 on Thursday 18th of August 2011 08:24:34 AM
Old 08-18-2011
complex requirement

i have a requirement to search a pattern1 and once the pattern1 is found i have to go up and search pattern2 and if pattern2 is found i have to search down for pattern3 and pattern4. once this cycle is compelted, again i have to search pattern1 and pattern2,3,4

i am able to do this by opening the file in vi mode. but pattern1 will be repeating many times and i want to create this as a shell script. as far i am aware i can move the search pointer up and down in vi mode but not using grep or sed or awk commands.

is there any way to run the vi commands in shell script?

sample text file
Code:
pattern2
xxxxxxxxxx
pattern3
xxxxxxx
yyyyyyyyyyy
pattern1
zzzzzzzz
zzzzzzzzz
pattern4
cccccccccccc
vvvvvvvvvvvvv
pattern2
iiiiiiiiiiiiiiiiiiiiiiiiii
pattern3
ggggggggggggggggg
hhhhhhhhhhhhhhhhhh
pattern1
llllllllllllllllllllllllll
kkkkkkkkkkkkkk
pattern4

i also want to repeat the cycle until pattern1 is found.

can any one help me on this?

Moderator's Comments:
Mod Comment Please use [code] and [/code] tags when posting code, data or logs etc. to preserve formatting and enhance readability, thanks.

Last edited by zaxxon; 08-18-2011 at 09:26 AM.. Reason: code tags
 

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AUSEARCH_ADD_TIMESTAMP_ITEM(3)					  Linux Audit API				    AUSEARCH_ADD_TIMESTAMP_ITEM(3)

NAME
ausearch_add_timestamp_item - build up search rule SYNOPSIS
#include <auparse.h> int ausearch_add_timestamp_item(auparse_state_t *au, const char *op, time_t sec, unsigned milli, ausearch_rule_t how) DESCRIPTION
ausearch_add_timestamp_item adds an event time 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 op parameter specifies the desired comparison. Legal op values are <, <=, >=, > and =. The left operand of the comparison operator is the timestamp of the examined event, the right operand is specified by the sec and milli parameters. 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. APPLICATION USAGE
Use ausearch_add_item(3) and ausearch_add_interpreted_item(3) to add conditions that check audit record fields. Use ausearch_add_expres- sion(3) to add complex search expressions using a single function call. SEE ALSO
ausearch_add_expression(3), ausearch_add_item(3), ausearch_add_interpreted_item(3), ausearch_add_regex(3), ausearch_set_stop(3), ause- arch_clear(3), ausearch_next_event(3), ausearch-expression(5). AUTHOR
Miloslav Trmac Red Hat Nov 2007 AUSEARCH_ADD_TIMESTAMP_ITEM(3)
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