判断一个文件/mnt/cdrom存在且为目录的命令是（）。
A: test-d/mnt/cdrom
B: test-f/mnt/cdrom
C: test-r/mnt/cdrom
D: test-w/mnt/cdrom
A: test-d/mnt/cdrom
B: test-f/mnt/cdrom
C: test-r/mnt/cdrom
D: test-w/mnt/cdrom
举一反三
- 判断一个文件/mnt/cdrom存在且为目录的命令是( )。 A: test -d /tmp/cdrom B: test -f /tmp/cdrom C: test -r /tmp/cdrom D: test -w /tmp/cdrom
- 以下哪条命令可以挂载光盘() A: mount<br/>/mnt/cdrom /dev/cdrom/ B: mount<br/>/mnt/cdrom /dev/sr0/ C: mount<br/>/dev/cdrom /test/cdrom/ D: mount<br/>/dev/sr0 /mnt/cdrom/
- 将光驱挂载到/mnt/cdrom的命令是 A: /dev/cdrom /mnt/cdrom B: mount /dev/cdrom /mnt/cdrom C: mkdir /dev/cdrom /mnt/cdrom D: mount /mnt/cdrom /dev/cdrom
- 将光盘挂载到/mnt/cdrom目录的命令是（） A: mount /dev/cdrom /mnt/cdrom B: mount /dev/sr0 /mnt/cdrom C: mount /mnt/cdrom /dev/cdrom D: mount /mnt/cdrom /dev/sr0
- 挂载cdrom的命令是（）。 A: mount/mnt/cdrom/dev/cdrom B: mount/dev/cdrom/mnt/cdrom C: umount/dev/cdrom/mnt/cdrom D: umount/mnt/cdrom/dev/cdrom