Help with filtering trace file through grep


 
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# 1  
Old 09-21-2010
Help with filtering trace file through grep

Hi,
I am using NS2 and i need to filter a trace file (part of which is shown below):
- 33.91576 2 3 tcp 1040 ------- 1 0.0 4.0 1115 2258
r 33.918907 4 3 ack 40 ------- 1 4.0 0.0 1107 2272
+ 33.918907 3 2 ack 40 ------- 1 4.0 0.0 1107 2272
- 33.918907 3 2 ack 40 ------- 1 4.0 0.0 1107 2272
r 33.9192 2 0 ack 40 ------- 1 4.0 0.0 1103 2264
+ 33.9192 0 2 tcp 1040 ------- 1 0.0 4.0 1123 2275
- 33.9192 0 2 tcp 1040 ------- 1 0.0 4.0 1123 2275
r 33.93256 2 3 tcp 1040 ------- 1 0.0 4.0 1111 2250
+ 33.93256 3 4 tcp 1040 ------- 1 0.0 4.0 1111 2250
- 33.93256 3 4 tcp 1040 ------- 1 0.0 4.0 1111 225
........................

The file needs to be filtered such that column number 3 should only contain "3" and column number 1 should only contain "r" using GREP (or awk).

Any help is greatly appreciated!
# 2  
Old 09-21-2010
Code:
awk '$1=="r" && $3==3' file

This User Gave Thanks to bartus11 For This Post:
# 3  
Old 09-21-2010
Not really correct, but simple.

Code:
grep "^r.* 3 " file

This User Gave Thanks to rdcwayx For This Post:
# 4  
Old 09-21-2010
Code:
$ ruby -ane 'print if $F[0]+$F[2]=="r3"' file

This User Gave Thanks to kurumi For This Post:
# 5  
Old 09-21-2010
@ everyone...thanks a bunch to all of you for replying so fast!

bartus11`s code worked perfectly so i didnt try the rest but i`m pretty sure they all work fine!! thank again!!
# 6  
Old 09-21-2010
exactly:
Code:
grep "^r [^ ]* 3 "

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