How can i use awk to compare the last field to determine if the counter has increased, and need to ensure that the first 4 fields must have the same values, e.g. in the example above, the counter field has increased by 1 count for "AAA BBB CCC DDD EEE" entry.
How can i use awk to compare the last field to determine if the counter has increased, and need to ensure that the first 4 fields must have the same values, e.g. in the example above, the counter field has increased by 1 count for "AAA BBB CCC DDD EEE" entry.
...
(a) 3, because "AAA BBB CCC DDD EEE" incremented 3 times?, or
(b) 2, because "PPP QQQ RRR SSS TTT" incremented 2 times?, or
(c) 1, because "VVV WWW XXX YYY ZZZ" incremented once?, or
(d) 0, because "GGG HHH III JJJ KKK" did not increment at all?
In your example, each entry will have it's own counter:
Code:
counter (a) = 3, because "AAA BBB CCC DDD EEE" incremented 3 times
counter (b) = 2, because "PPP QQQ RRR SSS TTT" incremented 2 times
counter (c) = 1, because "VVV WWW XXX YYY ZZZ" incremented once
counter (d) = 0, because "GGG HHH III JJJ KKK" did not increment at all
And based on the counter value, some actions will be triggered.
need some awk help to:
- scan the lines and compare the first 5 fields of each line
- and when all 5 fields match, then compare the 6th field (i.e. counter) to check if the value has increased or decreased
- if the counter value has increased, do something
- else, do nothing
- if scan cannot find line with matching first 5 fields, then do something
- end of scan
Thanks again in advance.. my apologies for the confusion.
Last edited by vgersh99; 11-10-2010 at 01:20 PM..
Reason: code tags, please!
#!/bin/ksh
nawk '
# create an variable "idx" which is a concatenation of the first 5 fields in a record/line
# as we read the file line by line
{idx=$1 FS $2 FS $3 FS $4 FS $5}
{
# see if "idx" is in array "a" - array "a" is indexed by the value of "idx"
if (idx in a)
# if "idx" is already in "a", check if the stored value (a[idx]) is less than the
# last field ($NF) of the current record/line. If it's, we see the "increase" in value
# If so, output the current line (print $0)
if (a[idx]<$NF)
print $0
# store the last field ($NF) of the current record in aarray "a" indexed by "idx"
a[idx]=$NF
}' myDiffFile | while read line
do
# read the output of "nawk" and do "doSomething" with the read line
echo "doSomething with [$line]"
done
Last edited by vgersh99; 11-10-2010 at 01:54 PM..
Reason: comments
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