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08-07-2006
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Use sed to merge multiple lines
Hi all:
I have a file in which the contents are as following: ... This is a test ONE TWO Hello, world! XXX YYY CCC test again three, four five six seven world AAA BBB QQQ test eight, nine world FFF EEE KKK ... I want to use sed to merge all lines between a line that contains a word 'test' and a line that contains a word 'world' into one line, and ignore other lines. In other words, I want a result as following: This is a test ONE TWO Hello, world! test again three, four five six seven world test eight, nine world Any help is appreciated. Thanks in advance for your help! Sincerely, Susan |
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08-07-2006
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Well, gets kind of tricky because of the arbitrary number of lines between "test" and "world", plus the arbitrary number of ines between "world" and "test"...
.,.. someone smarter than me will probably give you a better answer, but this works  Code:
sed 's/$/ @/' file.txt | sed -n '/test/,/world/p' | sed '/world/G' | sed -e :a -e '/@$/N; s/\@\n//; ta' Last edited by System Shock; 08-07-2006 at 11:57 PM.. |
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08-08-2006
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Quote:
Code:
awk '/test/,/world/{ if($0~/world/) ORS="\n"; else ORS=" "; print}' filename
This is a test ONE TWO Hello, world! test again three, four five six seven world test eight, nine world |
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08-08-2006
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Thanks to both System Shock and vish indian! It seems there is no easy way for sed to do it. I have to use awk, perl, or something else ...
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