Seperate a PHP log file by date

sep_logs_by_date.sh

#!/bin/bash

# Location of log file is passed in as the first parameter
# Get a list of all the dates in the file
DATES="$(grep "2016" $1 | cut -d ' ' -f 1 | sort | uniq)"

for i in ${DATES}; do
# $i contains the string of the date we are looking at
        
# Remove the leading [ to prevent grep regex errors
    pattern=${i:1}
        
# Grab the day from the file and store it in a new log file
    echo Building log for $pattern
    grep $pattern $1 > $pattern.log
done