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Sed Format String Syntax

Sed-style format strings treat all characters as literals except:

character

description

&

The ampersand character is replaced in the output stream by the the whole of what matched the regular expression. Use \& to output a literal '&' character.

\

Specifies an escape sequence.

An escape character followed by any character x, outputs that character unless x is one of the escape sequences shown below.

Escape

Meaning

\a

Outputs the bell character: '\a'.

\e

Outputs the ANSI escape character (code point 27).

\f

Outputs a form feed character: '\f'

\n

Outputs a newline character: '\n'.

\r

Outputs a carriage return character: '\r'.

\t

Outputs a tab character: '\t'.

\v

Outputs a vertical tab character: '\v'.

\xDD

Outputs the character whose hexadecimal code point is 0xDD

\x{DDDD}

Outputs the character whose hexadecimal code point is 0xDDDDD

\cX

Outputs the ANSI escape sequence "escape-X".

\D

If D is a decimal digit in the range 1-9, then outputs the text that matched sub-expression D.


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