conta o código do país em um arquivo e salva um comando de arquivo ou um script bash

Question

Situação: Eu gostaria de escrever script bash ou um comando que contará apenas o código do país em /var/log/mywebsite.log quantos deles, em seguida, salvar um arquivo. Gostaria que esse script verificasse o horário do Linux e obtivesse apenas valores de país do mesmo dia, preenchendo valores novos toda vez que eu iniciasse esse script. Eu gostaria de obter apenas 26 de novembro valores não 25 de novembro e data de linux é 26 de novembro

Saída desejada : file /home/mywebsite/www/countries.txt

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

/var/log/mywebsite.log

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Answer 1

Solução

GNU AWK (para obter apenas as contagens de códigos do país 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

    

Answer 2

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

    

Answer 3

resposta do 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