I have searched for (and used) an ASCII table so many times over the last few days, and I thought that it would be worth posting my own for convenience. Here it is, both as an Excel file and as text (below). Of course there is a man page for ASCII on Unix…
Dec Hex Oct Character Name Description
0 00 000 CTRL-@ NUL Null
1 01 001 CTRL-A SOH Start of heading
2 02 002 CTRL-B STX Start of text
3 03 003 CTRL-C ETX End of text
4 04 004 CTRL-D EOT End of transmission
5 05 005 CTRL-E ENQ Enquiry
6 06 006 CTRL-F ACK Acknowledge
7 07 007 CTRL-G BEL Bell
8 08 010 CTRL-H BS Backspace
9 09 011 CTRL-I HT Horizontal tab
10 0A 012 CTRL-J LF Linefeed
11 0B 013 CTRL-K VT Vertical tab
12 0C 014 CTRL-L FF Form feed
13 0D 015 CTRL-M CR Carriage return
14 0E 016 CTRL-N SO Shift out
15 0F 017 CTRL-O SI Shift in
16 10 020 CTRL-P DLE Data link escape
17 11 021 CTRL-Q DC1 Device Control, X-ON
18 12 022 CTRL-R DC2 Device Control
19 13 023 CTRL-S DC3 Device Control, X-OFF
20 14 024 CTRL-T DC4 Device Control
21 15 025 CTRL-U NAK Negative Acknowledge
22 16 026 CTRL-V SYN Synchronous idle
23 17 027 CTRL-W ETB End transmission blocks
24 18 030 CTRL-X CAN Cancel
25 19 031 CTRL-Y EM End of medium
26 1A 032 CTRL-Z SUB substitute
27 1B 033 CTRL-[ ESC Escape
28 1C 034 CTRL- FS File separator
29 1D 035 CTRL-] GS Group separator
30 1E 036 CTRL-^ RS Record separator
31 1F 037 CTRL-_ US Unit separator
32 20 040 Space
33 21 041 ! Exclamation mark
34 22 042 " Double quote
35 23 043 # Hash
36 24 044 $ Dollar
37 25 045 % Percent
38 26 046 & Ampersand
39 27 047 ' Apostrophe
40 28 050 ( Open Parenthesis
41 29 051 ) Close Parenthesis
42 2A 052 * Asterisk
43 2B 053 + Plus
44 2C 054 , Comma
45 2D 055 - Minus Minus (hyphen)
46 2E 056 . Dot Dot (period)
47 2F 057 / Slash Slash (forward-slash)
48 30 060 0
49 31 061 1
50 32 062 2
51 33 063 3
52 34 064 4
53 35 065 5
54 36 066 6
55 37 067 7
56 38 070 8
57 39 071 9
58 3A 072 : Colon
59 3B 073 ; Semicolon
60 3C 074 Greater than
63 3F 077 ? Question mark
64 40 100 @ At
65 41 101 A
66 42 102 B
67 43 103 C
68 44 104 D
69 45 105 E
70 46 106 F
71 47 107 G
72 48 110 H
73 49 111 I
74 4A 112 J
75 4B 113 K
76 4C 114 L
77 4D 115 M
78 4E 116 N
79 4F 117 O
80 50 120 P
81 51 121 Q
82 52 122 R
83 53 123 S
84 54 124 T
85 55 125 U
86 56 126 V
87 57 127 W
88 58 130 X
89 59 131 Y
90 5A 132 Z
91 5B 133 [ Open square bracket
92 5C 134 \ Backslash
93 5D 135 ] Close square bracket
94 5E 136 ^ Caret
95 5F 137 _ Underscore
96 60 140 ` Back quote
97 61 141 a
98 62 142 b
99 63 143 c
100 64 144 d
101 65 145 e
102 66 146 f
103 67 147 g
104 68 150 h
105 69 151 i
106 6A 152 j
107 6B 153 k
108 6C 154 l
109 6D 155 m
110 6E 156 n
111 6F 157 o
112 70 160 p
113 71 161 q
114 72 162 r
115 73 163 s
116 74 164 t
117 75 165 u
118 76 166 v
119 77 167 w
120 78 170 x
121 79 171 y
122 7A 172 z
123 7B 173 { Open brace
124 7C 174 | Vertical bar
125 7D 175 } Close brace
126 7E 176 ~ Tilde
127 7F 177 DEL Delete
ASCII characters