UNIX for Beginners Questions & Answers

#!/bin/bash
DATE=`date +%Y%m%d -d "1 days ago"`

USER='user'
PASS='pass'

HOST='192.168.1.1'
LOCAL_BACKUP_DIR='/app/'${DATE}''
REMOTE_DIR='/app/log'
tmp=($(lftp -e "cd $REMOTE_DIR && glob -d echo [0-9]*; quit" -u $USER,$PASS $HOST))
REMOTE_DIR="$REMOTE_DIR/${tmp[@]: -1}"

mkdir -p '/app/'${DATE}''

lftp -u $USER,$PASS $HOST <<EOF
set ftp:ssl-protect-data true
set ftp:ssl-force true
set ssl:verify-certificate no
cd $REMOTE_DIR
lcd $LOCAL_BACKUP_DIR

mirror

quit
EOF

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tmp=($(lftp -e "cd $REMOTE_DIR && glob -d echo [0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]; quit" -u $USER,$PASS $HOST))

REMOTE_DIR="$REMOTE_DIR/$(ssh user@host "cd $REMOTE_DIR; ls -tp | grep -Em1 '[0-9]{8}/$'")"