Copies all log files for a specific date range to another directory

logrange-copy.sh

#!/usr/bin/env bash
#
# Usage: logrange-copy.sh myApp 2017-10-17 /srv/nas/logs/myApp/
# param 1: myApp is a prefix and has multiple folders
# param 2: 2017-10-17 the upper range for daily iteration
# param 3: target directory to copy the files, could also be AWS S3
# 
# program is used to copy jboss logs for reindexing with elasticsearch
# used for logstash
#
logdir=$1
enddate=$2
target=$3

# array, fetch all log directories
logdirs=( $(ls | grep "$logdir") )

for d in "${logdirs[@]}"
do
    # extract date information
    year=$(date --date="$enddate" "+%Y")
    month=$(date --date="$enddate" "+%m")
    day=$(date --date="$enddate" "+%d")
    # increment from 01 to end, for 17 -> 01 02 .. 17
    for v in $(seq -w 01 $day);
    do
        logdate="$year-$month-$v"
        # usually gzipped
        logfile="server.log.$logdate.0.gz"
        # check for existence
        if [ -e "$d/$logfile" ]
        then
            echo "copy $d/$logfile to $target"
            cp "$d/$logfile" "$target/$d-$logdate.log.gz"
        else
            # echo "$d/$logfile not found"
            :
        fi
    done
done