Although this blog serves as my personal notebook, however, since I’m putting this on the internet, I should humbly cite the reference here first. Most of the tricks are from the above reference, arranged according to my need. These are mostly Mac OSX terminal specific line-editing commands, but  should work in any other terminal running bash, as well.

[NB: If you don’t have a META key, then ESC may be used to replace it: e.g., to get the same functionality as META+t, first hit ESC then the letter t. In my mac, I did not have a META key by default. However, I’ve just found a solution (Google is your friend!) — go to terminal preferences, then select the keyboard tab and check “Use option as meta key”]

Cursor movement

CTRL+a

Move cursor to beginning of the line.

CTRL+e

Move cursor to the end.

CTRL+f

Move forward one character. Identical to →.

CTRL+b

Move backward one character. Identical to ←.

META+f

Move forward one word.

META+b

Move backward one word.

CTRL+x CTRL+x

Mark current location in line and jump to beginning of line or second mark if defined. Repeat to jump to between both marks.

Cutting

CTRL+k

Delete everything from under the cursor to the end of the line. (I think of this as killing the rest of my line.)

CTRL+u

Delete everything from under the cursor the beginning of the line.

CTRL+w

Delete from under the cursor to the beginning of the word.

CTRL+d

Forward delete.

CTRL+h

Backspace.

Pasting/Inserting/Undoing

CTRL+y

Paste the most previously-deleted string. Basically a sort of command-line editting “undo.”

CTRL+_

Incremental undo.

META+r

Undo all the changes

CTRL+v

Insert next character verbatim. This is how you escape control sequences. For instance, to literally insert

^[, press ESC.

CTRL+j

Carriage return. Identical to hitting the return key.

CTRL+m

Newline. Identical to return.

Swapping

CTRL+t

Transpose (swap) the two characters before the cursor with one another.

META+t

Transpose (swap) the two words before the cursor with one another.

Changing case

META+c

Capitalize word under cursor and move to next word.

META+u

Uppercase word under cursor and move to next word.

META+l

Lowercase word under cursor and move to next word.

Auto-completion

META+.

Insert last word from previous command after cursor.

TAB

Auto-completes file, folder, and program names.

META+?

List the possible completions

CTRL+x /

List the possible filename completions

META+/

Attempt filename completion

CTRL+x ~

List the possible variable completions

META+~

Attempt username completion

CTRL+x $

List the possible variable completions

META+$

Attempt variable completion

CTRL+x @

List the possible hostname completion

META+@

Attempt hostname completion

CTRL+x !

List the possible command completions

META+!

Attempt command completion

META+TAB

Attempt completion from previous commands in the history list

CTRL+p

Recall previous command executed. Identical to ↑.

Various

CTRL+z

Stop the current process and send it to the background.

CTRL+c

Send an SIG_HUP to the current process.

CTRL+d

Send an end-of-file special character to the current process. Doing this at the command line is identical to closing your terminal window.

CTRL+l

Repaint screen.

Keyboard macros (link)

CTRL+x (

Start a macro

CTRL+x )

End macro

CTRL+x e

Execute last macro.

Using vi inbuilt
However, the sweetest of all is if you set the vim inbuilt (either in ~/.bashrc or in the command line), you can actually use the most of the functionalities of vi in the command line
set -o vi
It’s in the insert mode by default; in order to go to the command mode, hit ESC!
You may also want to add
bind -m vi-command -r 'v'
to your ~/.bashrc so that you are not taken to a blank file every time you hit v in the command mode.

You may add the following in ~/.inputrc so that vi is always accessible
set editing-mode vi

History. If you’re using vi inbuilt you may also want to know how to browse through history: that’s easy too — just press j (to go up) and k (to go down) in history in command mode, just like regular vi.

File/directory name completion. Type the beginning characters of the file, hit escape followed by \ (backslash). However, the backslash will take you to insert the next character if it cannot uniquely identify the file.

Here's the link for the commandline vi completion tricks.

NB: TAB-completion works fine in the insert mode.