I am unable to type any letter or number when ever I try to run any command which requires me to type a password
for eg:
bob@caleston-lp10:~$ ssh centos-lab
bob@centos-lab’s password:
unable to run anything and I am stuck with the labs
What you are seeing is supposed to happen. It is not like Windows which fills in dot or star characters instead of what you are typing. In Linux, the cursor does not move when typing to a password prompt.
Why? Think about it. If someone is looking over your shoulder on a Windows terminal, they can see how many characters long the password is. Very useful information if they want to attempt to crack it!
Just type the password and hit ENTER