Ascii Table
    0   1   2   3   4   5   6   7  
00 NUL SOH SOT ETX EOT ENQ ACK BEL 
01 BS  TAB LF  VT  FF  CR  SO  SI
02 DLE DC1 DC2 DC3 DC4 NAK SYN ETB 
03 CAN EM  SUB ESC FS  GS  RS  US
04 SPC  !   "   #   $   %   &   '
05  (   )   *   +   ,   -   .   /
06  0   1   2   3   4   5   6   7
07  8   9   :   ;   <   =   >   ?
10  @   A   B   C   D   E   F   G
11  H   I   J   K   L   M   N   O
12  P   Q   R   S   T   U   V   W
13  X   Y   Z   [   \   ]   ^   _
14  `   a   b   c   d   e   f   g
15  h   i   j   k   l   m   n   o
16  p   q   r   s   t   u   v   w
17  x   y   z   {   |   }   ~  DEL

Control Characters 
Oct Hx Dec  C ^  3LA Name and Usage
000 00   0    ^@ NUL Null, end of a C string. 
001 01   1    ^A SOH Start of Header, default escape char for GNU screen. 
002 02   2    ^B SOT Start of Text, default escape char for Tmux. 
003 03   3    ^C ETX End of Text, kills foreground process on Unix. 
004 04   4    ^D EOT End of Transmission, hangs up the current process. 
005 05   5    ^E ENQ Enquiry 
006 06   6    ^F ACK Acknowledge 
007 07   7 \a ^G BEL Bell, beeps or flashes the terminal. 
010 08   8 \b ^H BS  Backspace, deletes character before cursor. 
011 09   9 \t ^I TAB Tab, switches active panels, indents in editors. 
012 0A  10 \n ^J LF  Line Feed, end of line on unix, sent by enter key. 
013 0B  11 \v ^K VT  Vertical Tab 
014 0C  12 \f ^L FF  Form Feed 
015 0D  13 \r ^M CR  Carriage Return, \r\n is end of line on Windows. 
016 0E  14    ^N SO  Shift Out
017 0F  15    ^O SI  Shift In, open usually, save in nano.
020 10  16    ^P DLE Data Link Escape
021 11  17    ^Q DC1 Device Control 1 (Transfer on)
022 12  18    ^R DC2 Device Control 2
023 13  19    ^S DC3 Device Control 3 (Transfer off)
024 14  20    ^T DC4 Device Control 4 
025 15  21    ^U NAK Negative Acknowledge
026 16  22    ^V SYN Synchronous idle
027 17  23    ^W ETB End of Transmission Block
030 18  24    ^X CAN Cancel
031 19  25    ^Y EM  End of Medium 
032 1A  26    ^Z SUB Substitute, stop process on unix.
033 1B  27 \e ^[ ESC Escape, next regular character is Alted. 
034 1C  28    ^\ FS  File Separator
035 1D  29    ^] GS  Group Separator
036 1E  30    ^^ RS  Record Separator
037 1F  31    ^_ US  Unit Separator
177 7F 127    ^? DEL Delete. Delete key usually sends ^[[3~ instead.