File system space issue

Hi Oracle gurus,

This issue exists on my test database. I created an Oracle 12c database on linux 7. Now I would like to install OEM 13c on linux. Now due to insufficient space on the file system I am unable to install oem. Could you please suggest to me how to proceed further on this.

File system details

[oracle@orcl ~]$ df -h

Filesystem        Size Used Avail Use% Mounted on

devtmpfs         1.8G  0 1.8G 0% /dev

tmpfs          1.9G  0 1.9G 0% /dev/shm

tmpfs          1.9G 9.5M 1.8G 1% /run

tmpfs          1.9G  0 1.9G 0% /sys/fs/cgroup

/dev/mapper/ol_orcl-root 19G 11G 7.9G 57% /

/dev/mapper/ol_orcl-home 25G 19G 6.6G 74% /home