Intel® Fortran Compiler

Developer Guide and Reference

ID 767251
Date 3/31/2025
Public
Document Table of Contents

ASCII Character Set for Linux*

This topic describes the ASCII character set that is available on Linux* operating systems.

The ASCII character set contains characters with decimal values 0 through 127. The first half of each of the numbered columns identifies the character as you would enter it on a terminal or as you would see it on a printer. Except for SP and HT, the characters with names are nonprintable. In the figure, the characters with names are defined as follows:

NUL

Null

DC1

Device Control 1 (XON)

SOH

Start of Heading

DC2

Device Control 2

STX

Start of Text

DC3

Device Control 1 (XOFF)

ETX

End of Text

DC4

Device Control 4

EOT

End of Transmission

NAK

Negative Acknowledge

The remaining half of each column identifies the character by the binary value of the byte; the value is stated in three radixes—octal, decimal, and hexadecimal. For example, the uppercase letter A has, under ASCII conventions, a storage value of hexadecimal 41 (a bit configuration of 01000001), equivalent to 101 in octal notation and 65 in decimal notation.

The following is the ASCII Character Set for Linux.