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GNU Core-utils

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15.1 echo: Print a line of text

echo writes each given string to standard output, with a space between each and a newline after the last one. Synopsis:

echo [option]... [string]...

The program accepts the following options. Also see 2. Common options.

Do not output the trailing newline.

Enable interpretation of the following backslash-escaped characters in each string:

alert (bell)
suppress trailing newline
form feed
new line
carriage return
horizontal tab
vertical tab
the character whose ASCII code is nnn (octal); if nnn is not a valid octal number, it is printed literally.

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