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sed remove lines from a file
Name: G Chen Date: November 12, 2005 at 04:30:48 Pacific OS: linux CPU/Ram: 2.5g
Comment:
I'd like to clean a log file up by removing several lines for example:
Name: Dr. Nick Date: November 12, 2005 at 22:57:34 Pacific
Reply:
Maybe.
You still haven't said what you want to do.
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Response Number 2
Name: G Chen Date: November 13, 2005 at 05:02:10 Pacific
Reply:
ok. I want to use sed to delete LINE1 and LINE4. I know I can do like:
#Delete LINE1 from input. Save to output1 sed '/LINE1/d' input1 > output1
#Delete LINE4 from output1. Save to output2 sed '/LINE4/d' outputfile1 > outputfil2
In this case I only delete 2 lines but what if I want to delete 100 lines? I don't want to write delete statement and save to a temp output file 100 times. There should be a smarter way or maybe sed is not a good tool to achieve it?
gangchen
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Response Number 3
Name: Dr. Nick Date: November 13, 2005 at 11:38:16 Pacific
Reply:
Is there any logic behind the lines you want to delete? Every third line maybe, or is it just 100 arbitrary, random lines?
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