nas_backup.sh

#!/usr/bin/env bash
#------------------------------------------------------------------------------
# Initial Date: 2016-09-04
#------------------------------------------------------------------------------

error() { echo "--error-- $@" 1>&2; exit -1; }

#------------------------------------------------------------------------------

USAGE="usage: $(basename $0) <filelist>"

DESTDIR=/share/USBDisk1/nas
DATE=$(date +%Y-%m-%d)
TIME=$(date +%H-%M-%S)
BACKUPDIR=$DESTDIR/_backup-logs/$DATE.$TIME

#------------------------------------------------------------------------------

main()
{
    local filelist failfile src dest log msg i

    if [ $# -ne 1 ]
    then
        error "usage: $(basename $0) <filelist>"    
    fi

    filelist=$1

    cd $DESTDIR

    if [ "$(pwd)" != "$DESTDIR" ]
    then
        error "Must be run from $DESTDIR"
    fi

    mkdir -p $BACKUPDIR
    failfile=$BACKUPDIR/FAILED

    dirs=( $(cat $filelist) )

    for (( i=0; i<${#dirs[@]}; i+=2 ))
    do
        src=${dirs[$i]}
        dest=${dirs[$i+1]}
        log=$BACKUPDIR/$(basename $dest).log

        rsync --recursive       \
            --links             \
            --stats             \
            --times             \
            --omit-dir-times    \
            --itemize-changes   \
            --progress          \
            --human-readable    \
            --delete-before     \
            $src $dest 2>&1 | tee $log

        if [ ${PIPESTATUS[0]} -ne 0 ]
        then
            msg="backup failed: $src $dest"
            echo $dest >> $failfile
        else
            msg="$dest [ok]"
        fi

        echo $msg | tee -a $log

    done
}

main "$@"