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Re^2: Efficient way to sum columns in a file

by sk (Curate)
on Apr 13, 2005 at 18:12 UTC ( #447544=note: print w/replies, xml ) Need Help??

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  1. or download this
    [sk]% time cut -d, -f"1-15" numbers.csv > out.csv
    5.670u 0.340s 0:06.27 95.8% 
    
  2. or download this
    [sk]% time perl -lanF, -e 'print join ",", @F[0..14];' numbers.csv > o
    +ut.csv
    31.950u 0.200s 0:32.26 99.6%
    

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[shmem]: older versions of perl can't guess that "use of <<>> may be implemented someday" :D
Discipulus how much wise my brothers are? ;=)
[karlgoethebier]: thanks ;-
[karlgoethebier]: ...to all for reading the manuals
[shmem]: karlgoethebier: reading? Naah... just grep :-P

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