改变当前目录命令（）。

A.d

B.mkdir

C.rmdir

D.p

A.su

B.mkdir

C.pwd

D.cp

A.mdir

B.dir

C.Is

D.mkdir

A.pwd

B.ls

C.cd

D.mkdir

A.mkdir /student

B.mkdir student

C.mkdir ../student

D.mkdir /home/student

A.mkdir ~/sampledir mkdir ~/sampledir/sampledir01

B.mkdir ～/sampledir/sampledir01

C.mkdir ../sampledir

D.mkdir -p ~/sampledir/sampledir01

A.mkdir ~/sampledir mkdir ~/sampledir/sampledir01

B.mkdir ～/sampledir/sampledir01

C.mkdir ../sampledir

D.mkdir -p ~/sampledir/sampledir01

A.mkdir ~/sampledir mkdir ~/sampledir/sampledir01

B.mkdir ～/sampledir/sampledir01

C.mkdir ../sampledir

D.mkdir -p ~/sampledir/sampledir01

A.touch

B.rm

C.mkdir

D.ls