conte o código do país em um arquivo e salve um comando de arquivo ou script bash

conte o código do país em um arquivo e salve um comando de arquivo ou script bash

Situação: Eu gostaria de escrever um script bash ou um comando que conte apenas o código do país em /var/log/mywebsite.log quantos deles salvam um arquivo. Gostaria que este script verificasse a hora do Linux e obtivesse apenas valores de país do mesmo dia, preenchendo novos valores cada vez que eu iniciar este script. Gostaria de obter apenas valores de 26 de novembro, não de 25 de novembro e a data do Linux é 26 de novembro

Saída Desejada: arquivo /home/mywebsite/www/countries.txt

IN:35
US:123
QA:5
RU:23
MA:23
etc.

/var/log/meuwebsite.log

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Responder1

GNUAWKsolução (para obter contagens de códigos de país apenas para a data atual):

awk 'BEGIN{ curr_d=strftime("%d/%b/%Y", systime()) }
     $3~"^\\["curr_d{ cc[$8]++ }
     END{ for(i in cc) print i":"cc[i] }' /var/log/mywebsite.log > /home/mywebsite/www/countries.txt

Responder2

awk '{ a[$NF]++; }; END { for(key in a) print key ":" a[key]; }' inputfile

Responder3

resposta bash usando uma matriz associativa:

#!/bin/bash

declare -A codes

while IFS= read -r line; do
   country="${line##* }"
   if [[ -n ${codes[$country]} ]]; then
      ((codes[$country]++))
   else
      codes[$country]=1
   fi
done < <(grep "$(date +%d/%b/%Y)" /var/log/mywebsite.log)

for country in ${!codes[@]}; do
   echo "$country: ${codes[$country]}"
done

exit

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