文件规范..无法匹配基目录中的任何文件

Question

我正在将一些具有重复性的路径备份到另一个分区，现在我想排除一个子目录。但是我得到了这个错误：

[*] duplicity --full-if-older-than 1M --no-encryption -v4 --volsize 100 --exclude "/home/usera/gemeinfrei/epubs/**" "/home/usera" "file:///var/backups/backup/home/usera"
Import of duplicity.backends.giobackend Failed: No module named gio
Fatal Error: The file specification
    "/home/usera/gemeinfrei/epubs/**
cannot match any files in the base directory
    /home/usera
Useful file specifications begin with the base directory or some
pattern (such as '**') which matches the base directory.

这很奇怪，因为文件规范确实以基目录开头。我还想备份其他用户目录。我为他们每个人运行一个重复过程。或者我应该只使用一个使用多个 --include 选项并作为基目录/的重复性进程？

这是实际的备份脚本：

#!/bin/bash
#0 Error, 2 Warning, 4 Notice (default), 8 Info, 9 Debug (noisiest)
VERBOSE=4
BACKUP_PATH=/var/backups/backup
DUP="duplicity --full-if-older-than 1M --no-encryption -v$VERBOSE --volsize 100"
DUP_DEL="duplicity remove-older-than 2M --force -v$VERBOSE"
DUP_EXCLUDE="--exclude "/home/usera/gemeinfrei/epubs/**""
DIRECTORIES="/etc /home/usera /home/userb /home/userc /home/userd /home/usere /home/userf /home/userg /home/userh /var/vmail"
function doBackup() {
    for DIRECTORY in $DIRECTORIES; do
        if [ -d "$DIRECTORY" ]; then
            mkdir -p "${BACKUP_PATH}${DIRECTORY}"
            if [ -d "${BACKUP_PATH}${DIRECTORY}" ]; then
                echo "[*] $DUP $DUP_EXCLUDE "$DIRECTORY" "file://${BACKUP_PATH}${DIRECTORY}""
                $DUP $DUP_EXCLUDE "$DIRECTORY" "file://${BACKUP_PATH}${DIRECTORY}"
            else
                echo "[!] Backuppfad konnte nicht angelegt werden: ${BACKUP_PATH}${DIRECTORY}"
            fi
        fi
    done
}
function doClean() {
    for DIRECTORY in $DIRECTORIES; do
        echo "[*] $DUP_DEL "file://${BACKUP_PATH}${DIRECTORY}""
        $DUP_DEL "file://${BACKUP_PATH}${DIRECTORY}"
    done
}
echo -n "[*] "
date
df -h
while [ -n "$1" ]; do
    case $1 in
        "backup")
            doBackup
            ;;
        "clean")
            doClean
            ;;
        *)
            echo "[*] Unbekannter Parameter: '$1'" >&2
            ;;
    esac
    shift
done
df -h
echo -n "[*] "
date
exit 0

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