On 10/25/2017 01:24 PM, m.roth@xxxxxxxxx wrote:
This screams out for associative arrays. (Also called hashes,
dictionaries, maps, etc.)
That does limit you to CentOS 7+, or maybe 6+, as I recall. CentOS 5 is
definitely out, as that ships Bash 3, which lacks this feature.
<snip>
Associative arrays?
Awk! Awk! (No, I am not a seagull...)
sort file | awk '{ array[$1] += $2;} END { for (i in array) { print i "\t"
array[i];}'
mark "associative arrays, how do I love thee? Let me tot the arrays..."
Okay, I'm impressed with this one. I use awk for simple stuff when sed
starts getting weird, but this is absolutely elegant. No offense to the
other examples, they are all awesome, but I had no idea awk could do
this with such little effort. Well, I know what I'm studying up on this
weekend.
--
Mark Haney
Network Engineer at NeoNova
919-460-3330 option 1
mark.haney@xxxxxxxxxxx
www.neonova.net
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