There are different flavour of Linux in the market like Redhat, CentOS, Ubuntu, Debian etc. Most of the commands are same for all.

key board

UP ARROW: This key will show you previous commands in descending order.

DOWN ARROW: This key will show how your forward command history.

CTRL+L: This key will clear your screen.

CTRL+R: This key is used for reverse search, press ctrl+R and you can easily access your last run command.

CTRL+p: This key will show you previous history.

CTRL+n: This key will show you forward history.

CTRL+B: This key is use for move cursor one character to the left side.

CTRL+F: This key is use for move cursor one character to the right side.

CTRL+E: This key is use for move cursor to the end of the line.

CTRL+A: This key is use for move cursor to the start of the line.

CTRL+U: This key is use for cut every from the line start to the cursor.

CTRL+K: This key is use for cut every from the cursor to end of the line.

CTRL+W: This key is use for cut the current word before the cursor.

CTRL+Y: This key is use for paste the previous cut text.

CTRL+SHIFT+c: This key is use for copy selected text.

CTRL+SHIFT+v: This key is use for paste your last copied by CTRL+SHIFT+c

CTRL+T: It swap the last two characters before the cursor.

CTRL+m: It behaves like the enter key.

HOME: It will move the cursor at the start of the line.

END: It will move the cursor at the end of the line.

CTRL+D: this key is use for log out the current session.

TAB: This key is most important and special key in Linux, it auto complete the name of the command, file and directory etc.