clear clears the screen.
Clear
echo "This is my text."
print the contents of a text file onto the screen (like the "type" command in DOS).
k is not a standard command in Linux.
There is no such command. Obviously, in order to enter a command into the prompt, Linux must already be on.
If you're talking about Linux, no it does not.
In a Linux terminal, the command to create a new directory is: mkdir .
It depends. If you are using a Windows Command Prompt, the command is "cls". If you are using a Mac or Unix distribution, the command is usually "clear". Other than that, I would restate the question, specifying the OS and hardware you are using.
In Linux the chmod command is used to set file permissions.
Nothing. Helo is not a recognized command in linux.
Linux does not have a limit as to the number of characters you can enter in a command.
You get a command not found. Linux is case sensitive. So, for example: The command "systemctl" will not be the same as "SystemCTL" to a shell in Linux. One will work, the other will return an error saying there's no such command.