No sort required. A one liner:

C:\test>type junk.dat
1208782,abc
406744,def
367455,abc
283191,mps
226159,abc
197688,rxwz
137875,rxwz
115901,abc
107297,def
99213,mps

perl -nlE"($n,$k)=split',';$h{$k}+=$n}{say$_,':',$h{$_}for keys%h" jun
+k.dat
mps:382404
def:514041
abc:1918297
rxwz:335563

[download]

But should you need the output sorted:

perl -nlE"($n,$k)=split',';$h{$k}+=$n}{say$_,':',$h{$_}for sort keys%h
+" junk.dat
abc:1918297
def:514041
mps:382404
rxwz:335563

[download]
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Alphanumeric sort by BrowserUk
in thread Alphanumeric sort by zac_carl

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