Rclone syncing bash script

rclone_sync.sh

#!/bin/bash
##############################################################
### RCLONE SYNC SCRIPT
##############################################################

### crontab -e every 4 hours:
# 0 */4 * * * root /root/scrpts/rclone_sync.sh >/dev/null 2>&1

### Useful rclone commands:
# rclone config show
# rclone genautocomplete $SHELL
# rclone ncdu $REMOTEDIR:
# rclone tree -aC --dirsfirst --human $REMOTEDIR:

### Check if sync operation is still in progress:
if pidof -o %PPID -x "rclone_sync.sh"; then
	exit 1
fi

### Defining variables:
REMOTEDIR="/mnt/disks/UNRAID_EXT_BACKUP/rclone"

LOGFILE="/var/log/rclone/rclone_sync.log"
LOGLEVEL[1]="DEBUG"
LOGLEVEL[2]="INFO"
LOGLEVEL[3]="NOTICE"
LOGLEVEL[4]="ERROR"

LOCALDIR[1]="/mnt/cache"
LOCALDIR[2]="/mnt/disk1"
LOCALDIR[3]="/mnt/disks/XFS/appdatabackup"

PARAM[1]="--log-file=$LOGFILE"
PARAM[2]="--log-level=${LOGLEVEL[3]}"
PARAM[3]="--buffer-size 64"
PARAM[4]="--transfers 100"
PARAM[5]="--checkers 10"
PARAM[6]="--auto-confirm"
PARAM[7]="--fast-list"
PARAM[8]="--backup-dir $REMOTEDIR/_delete"
#PARAM[3]="--copy-links"

STARTED="$(date "+%d.%m.%Y %T") RCLONE SYNC OPERATION STARTED"
ENDED="$(date "+%d.%m.%Y %T") RCLONE SYNC OPERATION ENDED"

### Executing main script
for FROM in ${LOCALDIR[*]}; do
	TO=$REMOTEDIR$FROM
	
	echo $STARTED | tee -a $LOGFILE
	echo "rclone sync $FROM $TO ${PARAM[*]}" | tee -a $LOGFILE
	rclone sync $FROM $TO ${PARAM[*]}
	echo $ENDED | tee -a $LOGFILE
done

exit 0

• revised to accommodate a local destination [ TO=$REMOTEDIR:$FROM ---> TO=$REMOTEDIR$FROM]
• added --backup-dir for a 'trash' folder of items to be purged from the remote device (for manual review and purge)
• added logging of the backup command [echo "rclone sync $FROM $TO ${PARAM[*]}" | tee -a $LOGFILE]