Sync multiple ftp server to local filesystem in parallel

syncMultipleFtpToLocalInParallel.sh

# requires sem, wget
# You must adapt paths especially for the wget command

declare -A ips
# dictionnary server name <--> IP
ips=(["AD0130"]="192.168.10.130" ["AD0136"]="192.168.10.136" ["AD0137"]="192.168.10.137" ["AD0138"]="192.168.10.138" ["AD0139"]="192.168.10.139" ["AD0140"]="192.168.10.140" ["AD0145"]="192.168.10.145" ["AD0146"]="192.168.10.146" ["AD0147"]="192.168.10.147" ["AD0148"]="192.168.10.148" ["AD0149"]="192.168.10.149")

for AD in "${!ips[@]}"
do
echo "$AD - ${ips[$AD]} "  
echo $AD

# sync command generation
command="wget -a /var/log/syncFtp/syncFtp${AD}.log --timeout=10 --no-passive --tries=2 --ftp-password='' --ftp-user=user -m ftp://${ips[$AD]} -P /home/ubuntu/syncFolder/$AD"
echo $var

# Execution in a new process / thread? 
# sem is an alias for parallel --semaphore. --semaphorename makes sure that only one task is executed per server
# more information by searching semaphore, sem man, parralel man on Google
sem   --bg --semaphorename $AD $command
done