How to mount an external HDD on linux

sudo fdisk -l
sudo mkdir /media/Skliros_Diskos
sudo mount -t ntfs-3g /dev/sdb1 /media/Skliros_Diskos

Linux / UNIX: Delete a file

To remove a file or directory in Linux, FreeBSD, Solaris or Unix-like operating systems use the rm command.

To remove all files & subdirectories from a directory (MS-DOS deltree like command), enter:

rm -rf mydir