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Full Discussion: Grepping log file
Top Forums Shell Programming and Scripting Grepping log file Post 302363749 by zaxxon on Wednesday 21st of October 2009 08:59:25 AM
Old 10-21-2009
Defining a pattern range - this has nothing to do with arithmetics or something, just a pattern/string/text matching a range (to keep in mind!):

Code:
$> cat infile
16-SEP-2009 09:11:47 10.65.4.24
16-SEP-2009 09:11:47 10.3.4.11
30-SEP-2009 10:11:47 10.3.4.11
1-OCT-2009 10:11:47 10.65.4.24
6-OCT-2009 10:11:47 10.3.4.11
6-OCT-2009 12:31:01 10.3.4.11
16-OCT-2009 11:11:47 10.65.4.24
17-OCT-2009 11:11:47 10.65.4.24
18-OCT-2009 11:11:47 10.3.4.11
$> awk 'NR==FNR && $1 ~ /30-SEP-2009/,/16-OCT-2009/ {a[$3]+=1; next} END{for(x in a){print x,"->",a[x]}}' infile
10.65.4.24 -> 2
10.3.4.11 -> 3

The range is telling awk to take all from the 1st pattern up to the 1st match of the 2nd pattern. So if there are more entries for 16-OCT-2009 you'd better thake 17-OCT, if there is any entries for it. Or maybe just take a complete month to be sure without a range. Instead of a range there could stand a pattern matching for a day, month etc.
Play arround with awk pattern matching Smilie
 

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LEARN ABOUT DEBIAN

cpg_zcb_free

CPG_ZCB_FREE(2009-04-15)												  CPG_ZCB_FREE(2009-04-15)

NAME

       cpg_zcb_free - Frees a zero copy buffer #include <corosync/cpg.h>

       int cpg_zcb_fre(cpg_handle_t handle, void *buffer);

DESCRIPTION

       The cpg_zcb_free function will free a zero copy buffer.

       The argument handle describes the handle on which the buffer will be allocated.

       The argument buffer is the zero copy buffer to free.

RETURN VALUE

       This call returns the CPG_OK value if successful, otherwise an error is returned.

ERRORS

       The errors are undocumented.

SEE ALSO

       cpg_overview(8),  cpg_initialize(3),  cpg_finalize(3),  cpg_fd_get(3),  cpg_dispatch(3),  cpg_join(3),  cpg_leave(3),  cpg_mcast_joined(3),
       cpg_membership_get(3) cpg_zcb_alloc(3) cpg_zcb_free(3) cpg_zcb_mcast_joined(3) cpg_context_get(3) cpg_context_set(3) cpg_local_get(3)

Corosync Cluster Engine Programmer's Manual			 corosync Man Page					  CPG_ZCB_FREE(2009-04-15)
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