Cutting lines out using sed I presume.

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# 1  
Old 01-03-2002
Question Cutting lines out using sed I presume.

Happy New Year!!!

I'm trying to cut out some text in a data file where I only want the first line and the last line.

For example.

1. Colin Was here <<-- Text I want to cut out
4. I live here <<-- Text I want to cut out

Then put the output of line 1 and 4 into a new file.

Can this be done?

Thanks in advance.
# 2  
Old 01-03-2002
Well, if you know what text you want cut out, you can do something like this:
sed -e '/THIS IS THE TEXT I WANT TO CUT/d'   \
       -e '/OUT BECAUSE IT'S NO GOOD TO ME/d' < in_file > out_file

That will delete the entire line containing that string, while
sed -e 's/THIS IS THE TEXT I WANT TO CUT//g'   \
       -e 's/OUT BECAUSE IT'S NO GOOD TO ME//g' < in_file > out_file

will only delete the words...

That's a fairly simple explanation / solution, so if you need something better, please post back with some more examples...

Hope that helps
# 3  
Old 01-03-2002
hmm the trouble is that the text will different all the time, but I think that there will always be a common bit at the start on both lines.

1. ADDRESS1 then could be any text here
4. Post Code then any kind of text
# 4  
Old 01-03-2002
sed -n '1p;$p' inputfile
# 5  
Old 01-03-2002
And if you want the lines beginning with ADDRESS1 and Post Code, you could just pull those out with grep:

grep -e "^ADDRESS1" -e "^Post Code" input_file
# 6  
Old 01-08-2002
try something different ...

if you want only the first and last line in a text file why don't you try this...

head -n 1 filename > outputfile
tail -n 1 filename >> outputfile

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