• Like HyperTerminal in Windows

http://websistent.com/fix-serial-port-permission-denied-errors-linux/

Often in Linux, you must be root or be a member of the dialout user group to access serial ports as needed below.

Add a user to the dialout user group, then log out and back in to gain the new privileges:

sudo usermod -a -G dialout $USER

or

sudo usermod -a -G dialout <username>

sudo yum install minicom
# Insert USB seral adapter now, then:
sudo ln -s /dev/ttyUSB0 /dev/modem

• Tiny

sudo yum install cutecom

• Small
• Does other things too

sudo yum install putty