How to use USB/Pen flash devices with Linux

May people have a hard time trying to access USB pen drives while using Linux. This is to show how to mount and use device. It uses SCSI interface.So device /dev/sda where n is the number where it is connected. eg /dev/sda1.
Login as root and type
# mkdir –p /mnt/pen
To mount the device to create directory type
# mount /dev/sda1 /mnt/pen
Use this to see your files
# cd /mnt/pen
# ls –l