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How to Sort Records Uniquely?

 
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# 1  
Old 02-18-2008
How to Sort Records Uniquely?
I have a file containing many records separated by a % that I would like to sort uniquely (and if possible with a count of dupes) while maintaining the integrity of each record.
File looks like this:
Code:
%
srcip: 5.6.7.8
srcburb: internal
dstip: 1.2.3.4
dstport: 2000
dstburb: external
protocol: 6
%
srcip: 11.12..13.14
srcburb: external
dstip: 3.4.5.6
dstport: 137
dstburb: external
protocol: 6
%
srcip: 5.6.7.8
srcburb: internal
dstip: 1.2.3.4
dstport: 2000
dstburb: external
protocol: 6
%

Output would be:
Code:
%
srcip: 5.6.7.8
srcburb: internal
dstip: 1.2.3.4
dstport: 2000
dstburb: external
protocol: 6
%
srcip: 11.12..13.14
srcburb: external
dstip: 3.4.5.6
dstport: 137
dstburb: external
protocol: 6
%

I tried to use sort -t '%' -u filename but that doesnt maintain the records.

Any ideas?
# 2  
Old 02-18-2008
Code:
perl -0045 -ne'$/="%";print unless $X{$_}++' filename

Awk:

Code:
awk '!x[$0]++' RS="%" ORS="%" filename

P.S. This will ouput the unique records, but won't sort the input.
Last edited by radoulov; 02-19-2008 at 05:51 AM.. Reason: RS is a single character, so not only GNU Awk
# 3  
Old 02-18-2008
working towards a solution
[Note: \n is the newline]

use a sed or tr command to convert the \n to say a ~
then another sed or tr to convert the % to % and \n

now, each set of data is on one line

a sort command could then be used to sort and/or show unique
to do the final output, convert the ~ back to the \n
# 4  
Old 02-18-2008
You mean something like this:

Code:
tr '%' '~'<filename|tr '~\n' '\n@'|sort -u|tr '\n@' '%\n'

# 5  
Old 02-18-2008
Quote:
Originally Posted by radoulov
P.S. This will ouput the unique records, but won't sort the input.
It's not clear what key should be used for the sort. But if it were the string as a whole, we could try:

Code:
perl -0045 -ne'$/="%";$X{$_}++ } END { foreach (sort keys %X) { chop; print $_,"Count: ", $X{$_},"\n%"; ' filename

[/code]

You can change "sort keys" to "sort { EXPR } keys" where EXPR is an expression that compares $a and $b and returns 0, -1, or 1. The implied default is "$a <=> $b", but you can customize it to sort on a subfield, like:

Code:
foreach (sort {
   ($a =~ /dstport: (\d+)/m) <=> ($b =~ /dstport:  (\d+)/m); 
} keys %X) ....

# 6  
Old 02-18-2008
Quote:
Originally Posted by radoulov
Code:
perl -0045 -ne'$/="%";print unless $X{$_}++' filename

GNU Awk:

Code:
awk '!x[$0]++' RS="%" ORS="%" filename

P.S. This will ouput the unique records, but won't sort the input.
Thanks... the awk code seems to be doing the trick. Is there any way to count the # of instances of each record within awk?

Edit:
Found typo and got perl code working... Any way to count instances?
Last edited by earnstaf; 02-18-2008 at 03:58 PM..
# 7  
Old 02-18-2008
Quote:
Originally Posted by otheus
It's not clear what key should be used for the sort. But if it were the string as a whole, we could try:

Code:
perl -0045 -ne'$/="%";$X{$_}++ } END { foreach (sort keys %X) { chop; print $_,"Count: ", $X{$_},"\n%"; ' filename

[/code]

You can change "sort keys" to "sort { EXPR } keys" where EXPR is an expression that compares $a and $b and returns 0, -1, or 1. The implied default is "$a <=> $b", but you can customize it to sort on a subfield, like:

Code:
foreach (sort {
   ($a =~ /dstport: (\d+)/m) <=> ($b =~ /dstport:  (\d+)/m); 
} keys %X) ....

otheus,

This looks good and I see you have an output for "count" but I'm a little confused on how to use it in practice. The keys, in particular, is something I'm not familiar at all with. If we have it sort on the subfield dstport, and then match somewhere, but srcip is different within the same record, what is the output?

Also, do I need to write a perl script or can this be done from the command line?

I ran the command you have in your original block of code, and it gives the output that radoulov's code gives with a Count at the bottom of each record (which is blank, meaning it just reads "Count:" with nothing filling it.) I would guess that has something to do with the foreach in your next block of code that I'm not really sure how to implement.
Last edited by earnstaf; 02-18-2008 at 04:07 PM..
 
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