echo - Writes its arguments to standard output
echo [-n] [string...]
[Compaq] The -n option is valid only if the environment variable CMD_ENV is set to bsd.
The C shell has a built-in version of the echo command. If you are using the C shell, and want to guarantee that you are using the command described here, you must specify the full path /usr/bin/echo. See the csh(1) reference page for a description of the built-in command.
Interfaces documented on this reference page conform to industry standards as follows:
echo: XPG4, XPG4-UNIX
Refer to the
reference page for more information
about industry standards and associated tags.
[Compaq] No newline is added to the output. The
option is valid only if the environment variable
is set to
bsd. Otherwise any
operand is treated as a string rather than as a option. See the
reference page for use in portable applications.
The string to be displayed on standard output. The
command recognizes the following special characters in the
Displays an alert character.
Displays a backspace character.
Suppresses the newline character. All characters following
in the arguments are ignored.
Displays a formfeed character.
Displays a newline character.
Displays a carriage-return character.
Displays a tab character.
Displays a vertical tab character.
Displays a backslash character.
Displays an 8-bit character whose value is the 1-, 2- or 3-digit
number. The first digit of
must be a 0 (zero).
The echo command writes the specified string to standard output, followed by a newline character.
The arguments are separated by spaces. Use the echo command to produce diagnostic messages in command files and to send data into a pipe. If there are no arguments, the echo command outputs a newline character.
command described here is the
shells contain built-in
which do not necessarily work in the same way as the
The following exit values are returned:
An error occurred.
To write a message to standard output, enter: echo Please insert diskette . . . To display a message containing special characters as listed in DESCRIPTION, enclose the message in quotes, as follows: echo "\n\n\nI'm at lunch.\nI'll be back at 1 p.m."
The following environment variables affect the execution of
[Compaq] This variable must set to
option to be valid. Otherwise any
operand is treated as a
Provides a default value for the internationalization variables
that are unset or null. If
is unset or null, the corresponding value from the default locale is used.
If any of the internationalization variables contain an invalid setting, the
utility behaves as if none of the variables had been defined.
If set to a non-empty string value, overrides the values of
all the other internationalization variables.
Determines the locale for the interpretation of sequences
of bytes of text data as characters (for example, single-byte as opposed to
multibyte characters in arguments).
Determines the locale for the format and contents of diagnostic
messages written to standard error.
Determines the location of message catalogues for the processing
Commands: csh(1), ksh(1), printf(1), Bourne shell sh(1b), POSIX shell sh(1p)