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Linux command to extract first xxx lines from file

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06-07-2006 3:02pm

#1

Alligator Wine

Registered Users Posts: 90 ✭✭

Join Date: August 2005

Posts: 59

Hi, I was wondering if someone could tell me how to go about getting say the first 50,000 lines from a file and write it to another file in linux. I guess it's pretty simple but I googled it and didn't find anything. Thanks

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#2 06-07-2006 3:03pm
Bluetonic

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head -n 50000 from.file > to.file

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#3 06-07-2006 3:04pm
Morlar

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(already answered).

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#4 06-07-2006 3:26pm
Alligator Wine

Registered Users Posts: 90 ✭✭

Join Date: August 2005

Posts: 59

Just as I thought, easypeasy, cheers

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#5 06-07-2006 4:25pm
GreeBo

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or if its (g)zipped
gzcat from.file | head -50000 > to.file

a little routine that I use all the time when parsing log files is
grep -n <search term> myfile

then you get the line number you want, say its on line 1000
usually I want something a bit before and a bit after the line I grepped for
so then you can do
head -1100 | tail -200 > result.log

now result.log contains 200 lines with the bit you searched for in the middle

Now wheres my BluePeter badge?

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