Bash - Few shortcuts to make our life easier

Navigate the cursor inside the current command statement
Ctrl + a	-	Start of the command
Ctrl + e	-	End of the command
Ctrl + f	-	Move to the next character
Ctrl + b	-	Move to the previous character
Alt + right_arrow	-	End of the current word or the next word
Alt + left_arrow	-	Start of the current word or the previous word
Delete
Ctrl + k	-	Delete from current cursor position to the end of the command
Ctrl + u	-	Delete from current cursor position to the start of the command
Ctrl + w	-	Delete one word before the cursor
Ctrl + h	-	Delete one character before the cursor (Backspace)
Ctrl + d	-	Delete the current character under the cursor
Search History
Ctrl + r	-	Find the command with the phrase you type.It searches the history as you type. For each consecutive hit "Ctrl + r", it finds the next match in the history and moves to the start of the history.
!!	-	Repeat the last command
!xyz	-	Find the latest command starting with xyz from the history and run it
!xyz:p	-	Print the latest command starting with xyz from the history
!$	-	Last argument of previous command
!*	-	All arguments of previous command
^abc^def	-	Replace abc with def in the previous command and run it
Process
$$	-	Gets the pid of the current bash/script
$!	-	Pid of the last background process
$?	-	Exit status of the last command