Text - Control Characters

Data System Architecture

About

Control characters are used to control the interpretation or display of text, but these characters themselves have no visual or spatial representation.

List

How to see them?

cat -A file
  • $ is \n
  • ^M$ is \r\n
  • ^I is TAB character

Documentation / Reference




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Data System Architecture
Character - Null Character (NUL)

The null character (also known as null terminator) , abbreviated NUL, is a control character with the value zero It's the first character of most of the character set such as ASCII and unicode You...
Data System Architecture
Character - Tabulation (Horizontal tab)

Tabulation are non-visible, control characters that permits to align text. The most known is the 0009Horizontal tabulation (ie HT, character 9) or \t as shorthand that is part of the space character...
Newline
Characters - Newline - End of Line ( EOL ) - Line Separators - Line Break

EOL To mark line endings in text files, the following characters are used: Unix/Linux file systems use newlines (\n). MacOS uses carriage-returns (\r). Windows uses a carriage-return followed...
Regexp
Regexp - Character Class (Character Set)

A character class defines a domain of permitted characters. character set ASCII characters with square brackets where: [ is the start character class definition ] is the end character class...
Regexp
Regular Expression - Character Matcher

Character matcher matchesone characters in a regular expression pattern. For multiple character match, see Symbol Matches x The character x \\ The backslash character \0n The character with...
Card Puncher Data Processing
Shell Data Processing - Echo (Gnu Utility)

This page is the echo executable of the Gnu utility package that implements an echo functionality. echo To echo a string: where: -n: do not output a newline character. See the example...
Sql Developer Encoding
Sql Developer - Shortcut

Ctrl + Shift + W: Show control characters
Data System Architecture
Text - Carriage Return (CR) Character

The carriage return (CR) is a control character. It: is the end of line (EOL) on Macintosh and one EOL element for Windows. moves the cursor back to the beginning of the line in a console. It's...
Character Map 0248 00f8
Text - Character

A character is: an atomic unit of text (10646ISO/IEC 10646:2000 Character specification] is categorized as a primitive data type A character is the smallest component of written language that has...
Data System Architecture
Text - Non-printing Character (Tabulation, New Line, )

... Non-printing characters are character that are not printed to the screen. You have two main category of non-printing characters, mainly



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