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03-19-2009
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SED: delete matching row and 4 next rows?
Hi, Tried to look for solution, and found something similar but could not adapt the solution for my needs.. I'm trying to match a pattern (in this case "ProcessType")in a logfile, then delete that line and the 4 following lines. The logfile looks as follows: Code:
ProcessType: PROCESS_A (0) <---- delete this SequenceNumber: 8285 <---- delete this <---- delete this 2009 Mar 07 22:04:23:679 0:8285 <---- delete this <---- delete this ProcessType: PROCESS_A (0) SequenceNumber: 8286 2009 Mar 07 22:04:23:679 0:8286 ProcessType: PROCESS_B (68) SequenceNumber: 40689 2009 Mar 07 22:04:23:698 68:40689 DATA that should not be deleted ProcessType: PROCESS_B (68) SequenceNumber: 40690 2009 Mar 07 22:04:23:698 68:40690 DATA that should not be deleted ProcessType: PROCESS_C (93) SequenceNumber: 36235 2009 Mar 07 22:04:23:829 93:36235 ProcessType: PROCESS_C (93) SequenceNumber: 36236 2009 Mar 07 22:04:23:829 93:36236 DATA that should not be deleted I tried this: Code:
sed -e '/\<ProcessType\>/,/$/d' < log.txt > test But that only resulted in this: Code:
2009 Mar 07 22:04:23:679 0:8285 2009 Mar 07 22:04:23:679 0:8286 2009 Mar 07 22:04:23:698 68:40689 2009 Mar 07 22:04:23:698 68:40690 2009 Mar 07 22:04:23:829 93:36235 2009 Mar 07 22:04:23:829 93:36236 2009 Mar 07 22:04:23:945 91:89062 2009 Mar 07 22:04:23:945 91:89063 2009 Mar 07 22:04:24:018 91:89064 2009 Mar 07 22:04:24:018 91:89065 2009 Mar 07 22:04:24:018 91:89066 |
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03-19-2009
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If awk is allowed: Code:
awk '/ProcessType:/ && !p {i=-4;p=1} i++ > 0' file
Regards |
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03-19-2009
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Thanks franklin, did not work for me however.. Code:
# awk '/ProcessType:/ && !p {i=-4;p=1} i++ > 0' file
awk: syntax error near line 1
awk: bailing out near line 1
With nawk it executes but only deletes the first occurrence of that "block" Code:
# nawk '/ProcessType:/ && !p {i=-4;p=1} i++ > 0' file
ProcessType: PROCESS_A (0)
SequenceNumber: 8286
2009 Mar 07 22:04:23:679 0:8286
ProcessType: PROCESS_B (68)
SequenceNumber: 40689
2009 Mar 07 22:04:23:698 68:40689
DATA that should not be deleted
ProcessType: PROCESS_B (68)
SequenceNumber: 40690
...
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03-19-2009
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I misunderstood the question, this should delete the first 4 lines in all blocks: Code:
nawk '/ProcessType:/{i=-4} i++ > 0' file
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