MOVE DIRECTORIES AND FILES

move directories and files

[root@localhost ~]# mv d1 /opt

[root@localhost ~]# ls
anaconda-ks.cfg  Documents           linux        Pictures  s4
d4               Downloads           linux1       Public    s5
d5               install.log         mozilla.pdf  s2        Templates
Desktop          install.log.syslog  Music        s3        Videos

to enter the /opt directories 
[root@localhost ~]# cd /opt

[root@localhost opt]# ls
d1