单项选择题X 纠错
A. the process id of last background command
B. the exit status of the last command
C. the exit status of the last background command
D. the process id of the current shell
E. the name of the command being executed
你可能喜欢
填空题
填空题
单项选择题
A. xfserv
B. xfs
C. fonts
D. xfstt
E. fserv
单项选择题
A. mount /dev/cdrom /mnt/cdrom
B. mount/dev/cdrom
C. mount -t cdrom /dev/cdrom /mnt/cdrom
D. mount /mnt/cdrom
E. automount /mnt/hdd /mnt/cdrom