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15 lines
213 B
15 lines
213 B
{
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if (NR == 1)
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{
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last = $0
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lastLen = length($0)
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print last
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}
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if (substr($0,1,lastLen) != last)
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{
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last = $0
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lastLen = length($0)
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print last
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}
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}
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