Bash Shell脚本tar错误

通过tar on shell备份脚本压缩文件夹时出现问题

# Path to backup directories
DIRS="/home/bob /var/www /root"

# Store todays date
NOW=$(date +"%F")

# Store backup path
BACKUP="/backup"
BACKUPDIR="$BACKUP/daily/calendar/$NOW"

# Backup file name hostname.time.tar.gz 
BFILE="dirs.tar.gz"

$TAR -zcvf ${BACKUPDIR}/${BFILE} "${DIRS}"
echo  $TAR -zcvf ${BACKUPDIR}/${BFILE} "${DIRS}"

我经常犯的错误是

/bin/tar: Removing leading `/' from member names
/bin/tar: /home/bob /var/www /root: Cannot stat: No such file or directory
/bin/tar: Exiting with failure status due to previous errors
/bin/tar -zcvf /backup/daily/calendar/2012-12-13/dirs.tar.gz /home/bob /var/www /root

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如果我在终端上运行最后一个echo命令，它工作正常。在脚本中调用时不起作用

请尝试删除双引号：

$TAR -zcvf ${BACKUPDIR}/${BFILE} ${DIRS}