{ "content": [ { "type": "text", "text": "# ascii(7) (man)\n\n**Summary:** ascii - ASCII character set encoded in octal, decimal, and hexadecimal\n\n## See Also\n\n- charsets(7)\n- iso8859-1(7)\n- iso8859-2(7)\n- iso8859-3(7)\n- iso8859-4(7)\n- iso8859-5(7)\n- iso8859-6(7)\n- iso8859-7(7)\n- iso8859-8(7)\n- iso8859-9(7)\n- iso8859-10(7)\n- iso8859-11(7)\n- iso8859-13(7)\n- iso8859-14(7)\n- iso8859-15(7)\n- iso8859-16(7)\n- utf-8(7)\n\n## Section Outline\n\n- **NAME** (2 lines)\n- **DESCRIPTION** (76 lines) — 1 subsections\n - Tables (21 lines)\n- **NOTES** (1 lines) — 1 subsections\n - History (13 lines)\n- **SEE ALSO** (4 lines)\n- **COLOPHON** (7 lines)\n\n## Full Content\n\n### NAME\n\nascii - ASCII character set encoded in octal, decimal, and hexadecimal\n\n### DESCRIPTION\n\nASCII is the American Standard Code for Information Interchange. It is a 7-bit code. Many\n8-bit codes (e.g., ISO 8859-1) contain ASCII as their lower half. The international counter‐\npart of ASCII is known as ISO 646-IRV.\n\nThe following table contains the 128 ASCII characters.\n\nC program '\\X' escapes are noted.\n\nOct Dec Hex Char Oct Dec Hex Char\n────────────────────────────────────────────────────────────────────────\n000 0 00 NUL '\\0' (null character) 100 64 40 @\n001 1 01 SOH (start of heading) 101 65 41 A\n002 2 02 STX (start of text) 102 66 42 B\n003 3 03 ETX (end of text) 103 67 43 C\n004 4 04 EOT (end of transmission) 104 68 44 D\n005 5 05 ENQ (enquiry) 105 69 45 E\n006 6 06 ACK (acknowledge) 106 70 46 F\n007 7 07 BEL '\\a' (bell) 107 71 47 G\n010 8 08 BS '\\b' (backspace) 110 72 48 H\n011 9 09 HT '\\t' (horizontal tab) 111 73 49 I\n012 10 0A LF '\\n' (new line) 112 74 4A J\n013 11 0B VT '\\v' (vertical tab) 113 75 4B K\n014 12 0C FF '\\f' (form feed) 114 76 4C L\n015 13 0D CR '\\r' (carriage ret) 115 77 4D M\n016 14 0E SO (shift out) 116 78 4E N\n017 15 0F SI (shift in) 117 79 4F O\n020 16 10 DLE (data link escape) 120 80 50 P\n021 17 11 DC1 (device control 1) 121 81 51 Q\n022 18 12 DC2 (device control 2) 122 82 52 R\n023 19 13 DC3 (device control 3) 123 83 53 S\n024 20 14 DC4 (device control 4) 124 84 54 T\n025 21 15 NAK (negative ack.) 125 85 55 U\n026 22 16 SYN (synchronous idle) 126 86 56 V\n027 23 17 ETB (end of trans. blk) 127 87 57 W\n030 24 18 CAN (cancel) 130 88 58 X\n031 25 19 EM (end of medium) 131 89 59 Y\n032 26 1A SUB (substitute) 132 90 5A Z\n033 27 1B ESC (escape) 133 91 5B [\n034 28 1C FS (file separator) 134 92 5C \\ '\\\\'\n035 29 1D GS (group separator) 135 93 5D ]\n036 30 1E RS (record separator) 136 94 5E ^\n037 31 1F US (unit separator) 137 95 5F\n040 32 20 SPACE 140 96 60 `\n041 33 21 ! 141 97 61 a\n042 34 22 \" 142 98 62 b\n043 35 23 # 143 99 63 c\n044 36 24 $ 144 100 64 d\n045 37 25 % 145 101 65 e\n046 38 26 & 146 102 66 f\n047 39 27 ' 147 103 67 g\n050 40 28 ( 150 104 68 h\n051 41 29 ) 151 105 69 i\n052 42 2A * 152 106 6A j\n053 43 2B + 153 107 6B k\n054 44 2C , 154 108 6C l\n055 45 2D - 155 109 6D m\n056 46 2E . 156 110 6E n\n\n057 47 2F / 157 111 6F o\n060 48 30 0 160 112 70 p\n061 49 31 1 161 113 71 q\n062 50 32 2 162 114 72 r\n063 51 33 3 163 115 73 s\n064 52 34 4 164 116 74 t\n065 53 35 5 165 117 75 u\n066 54 36 6 166 118 76 v\n067 55 37 7 167 119 77 w\n070 56 38 8 170 120 78 x\n071 57 39 9 171 121 79 y\n072 58 3A : 172 122 7A z\n073 59 3B ; 173 123 7B {\n074 60 3C < 174 124 7C |\n075 61 3D = 175 125 7D }\n076 62 3E > 176 126 7E ~\n077 63 3F ? 177 127 7F DEL\n\n#### Tables\n\nFor convenience, below are more compact tables in hex and decimal.\n\n2 3 4 5 6 7 30 40 50 60 70 80 90 100 110 120\n------------- ---------------------------------\n0: 0 @ P ` p 0: ( 2 < F P Z d n x\n1: ! 1 A Q a q 1: ) 3 = G Q [ e o y\n2: \" 2 B R b r 2: * 4 > H R \\ f p z\n3: # 3 C S c s 3: ! + 5 ? I S ] g q {\n4: $ 4 D T d t 4: \" , 6 @ J T ^ h r |\n5: % 5 E U e u 5: # - 7 A K U i s }\n6: & 6 F V f v 6: $ . 8 B L V ` j t ~\n7: ' 7 G W g w 7: % / 9 C M W a k u DEL\n8: ( 8 H X h x 8: & 0 : D N X b l v\n9: ) 9 I Y i y 9: ' 1 ; E O Y c m w\nA: * : J Z j z\nB: + ; K [ k {\nC: , < L \\ l |\nD: - = M ] m }\nE: . > N ^ n ~\nF: / ? O o DEL\n\n### NOTES\n\n#### History\n\nAn ascii manual page appeared in Version 7 of AT&T UNIX.\n\nOn older terminals, the underscore code is displayed as a left arrow, called backarrow, the\ncaret is displayed as an up-arrow and the vertical bar has a hole in the middle.\n\nUppercase and lowercase characters differ by just one bit and the ASCII character 2 differs\nfrom the double quote by just one bit, too. That made it much easier to encode characters\nmechanically or with a non-microcontroller-based electronic keyboard and that pairing was\nfound on old teletypes.\n\nThe ASCII standard was published by the United States of America Standards Institute (USASI)\nin 1968.\n\n### SEE ALSO\n\ncharsets(7), iso8859-1(7), iso8859-2(7), iso8859-3(7), iso8859-4(7), iso8859-5(7),\niso8859-6(7), iso8859-7(7), iso8859-8(7), iso8859-9(7), iso8859-10(7), iso8859-11(7),\niso8859-13(7), iso8859-14(7), iso8859-15(7), iso8859-16(7), utf-8(7)\n\n### COLOPHON\n\nThis page is part of release 5.10 of the Linux man-pages project. A description of the\nproject, information about reporting bugs, and the latest version of this page, can be found\nat https://www.kernel.org/doc/man-pages/.\n\n\n\nLinux 2020-06-09 ASCII(7)\n\n" } ], "structuredContent": { "command": "ascii", "section": "7", "mode": "man", "summary": "ascii - ASCII character set encoded in octal, decimal, and hexadecimal", "synopsis": null, "flags": [], "examples": [], "see_also": [ { "name": "charsets", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/charsets/7/json" }, { "name": "iso8859-1", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-1/7/json" }, { "name": "iso8859-2", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-2/7/json" }, { "name": "iso8859-3", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-3/7/json" }, { "name": "iso8859-4", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-4/7/json" }, { "name": "iso8859-5", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-5/7/json" }, { "name": "iso8859-6", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-6/7/json" }, { "name": "iso8859-7", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-7/7/json" }, { "name": "iso8859-8", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-8/7/json" }, { "name": "iso8859-9", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-9/7/json" }, { "name": "iso8859-10", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-10/7/json" }, { "name": "iso8859-11", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-11/7/json" }, { "name": "iso8859-13", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-13/7/json" }, { "name": "iso8859-14", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-14/7/json" }, { "name": "iso8859-15", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-15/7/json" }, { "name": "iso8859-16", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/iso8859-16/7/json" }, { "name": "utf-8", "section": "7", "url": "https://www.chedong.com/phpMan.php/man/utf-8/7/json" } ], "section_outline": [ { "name": "NAME", "lines": 2, "subsections": [] }, { "name": "DESCRIPTION", "lines": 76, "subsections": [ { "name": "Tables", "lines": 21 } ] }, { "name": "NOTES", "lines": 1, "subsections": [ { "name": "History", "lines": 13 } ] }, { "name": "SEE ALSO", "lines": 4, "subsections": [] }, { "name": "COLOPHON", "lines": 7, "subsections": [] } ] } }