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countsort − counts all subsequent identical lines from stdin |
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countsort [ -n ] |
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countsort reads each lines from stdin. While subsequent lines are identical countsort increases an internal count, when a different line occurs, the previous last line is output prepended with the count of occurences. The process starts over with the new different line. A typical use is to count occurences from a sorted file. |
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-n |
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prepends each output line with it’s own occurence order (1 for the first, 2 for the second ...) |
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none. |
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> echo ’a.a.a.b.b.c.c.c.c’ | tr ’.’ ’\n’ | countsort 3 a 2 b 4 c > echo ’a.a.a.b.b.c.c.c.c’ | tr ’.’ ’\n’ | countsort -n 0 3 a 1 2 b 2 4 c |
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There are probably plenty. Please report them to bozomake@disjunkt.com |
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Jean-Daniel Pauget (bozomake@disjunkt.com) |
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$Id: countsort.1.in 581 2010-04-08 21:42:14Z jd $ |