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How to select lines between two marker patterns which may occur multiple times with awk/sed
...ssary:
$ awk '/abc/{flag=1;next}/mno/{flag=0}flag' file
def1
ghi1
jkl1
def2
ghi2
jkl2
How does this work?
/abc/ matches lines having this text, as well as /mno/ does.
/abc/{flag=1;next} sets the flag when the text abc is found. Then, it skips the line.
/mno/{flag=0} unsets the flag when the...
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littleadvlittleadv
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How can I pair socks from a pile efficiently?
...rating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average.
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spokeadokespokeadoke
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