UNIX in a Nutshell: System V Edition

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The Bourne Shell and Korn Shell
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echo [-n] [string]

Write string to standard output; if -n is specified, the output is not terminated by a newline. If no string is supplied, echo a newline. In the Korn shell, echo is just an alias for print -. (See also echo in Section 2.) echo understands special escape characters, which must be quoted (or escaped with a \) to prevent interpretation by the shell:




Suppress the terminating newline (same as -n).






Carriage return.


Tab character.




ASCII character represented by octal number nnn, where nnn is 1, 2, or 3 digits and is preceded by a 0.


$ echo "testing printer" | lp
$ echo "Warning: ringing bell \007"

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