在ubuntu12.04中，如何解决"wodim:没有这样的文件或目录“？

Question

我在终端中执行了一个cd写入命令，它将成功地工作，但是如果从php调用这个脚本使用exec()，它将在我的日志文件中输出一些错误。在/etc/wodim.conf中是否需要配置？

Cd写入命令：

cdrecord -v -eject -multi speed=16 /tmp/newcd.iso

我的日志文件内容

wodim: No write mode specified.
wodim: Assuming -tao mode.
wodim: Future versions of wodim may have different drive dependent defaults.
wodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.
Device was not specified. Trying to find an appropriate drive...
Looking for a CD-R drive to store 27.90 MiB...
Detected CD-R drive: /dev/cdrw
Using /dev/cdrom of unknown capabilities
scsidev: '/dev/cdrom'
devname: '/dev/cdrom'
scsibus: -2 target: -2 lun: -2
scsidev: '-1'
devname: '-1'
scsibus: -2 target: -2 lun: -2
wodim: No such file or directory. 
Cannot open SCSI driver!
For possible targets try 'wodim --devices' or 'wodim -scanbus'.
For possible transport specifiers try 'wodim dev=help'.
For IDE/ATAPI devices configuration, see the file README.ATAPI.setup from
the wodim documentation.
TOC Type: 3 = CD-ROM XA mode 2

请帮助解决这个问题，我正在使用ubuntu12.04LTS

Answer 1

请使用sup用户权限执行cd写入命令..。在这里sudo cdrecord -v -eject -multi speed=16 /tmp/newcd.iso