.\"
.\" Sccsid @(#)echo.1	1.4 (gritter) 7/2/05
.\" Derived from echo(1), Unix 7th Edition:
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.TH ECHO 1 "7/2/05" "Heirloom Toolchest" "User Commands"
.SH NAME
echo \- echo arguments
.SH SYNOPSIS
\fBecho\fR [\fIargument \fR...]
.SH DESCRIPTION
.I Echo
writes its
.I arguments
separated by blanks and terminated by
a newline on the standard output.
.PP
.I Echo
is useful for producing diagnostics in
shell programs and for writing constant data on pipes.
To send diagnostics to the standard error file, do
`echo ... 1>&2'.
.PP
The following escapes sequences are recognized in the
.IR arguments :
.TP 7n
.B \ea
Prints an alert character
.RB ( /usr/5bin/posix/echo
and
.B /usr/5bin/posix2001/echo
only).
.TP
.B \eb
Prints a backspace character.
.TP
.B \ec
Causes the command to return immediately.
Any following characters are ignored,
and the terminating newline is not printed.
.TP
.B \ef
Prints a formfeed character.
.TP
.B \en
Prints a newline character.
.TP
.B \er
Prints a carriage-return character.
.TP
.B \et
Prints a tabulator character.
.TP
.B \ev
Prints a vertical tabulator character.
.TP
.B \e\e
Prints a backslash character.
.TP
.BI \e0 nnn
Prints the character (byte) with octal value
.IR nnn .
.SH "ENVIRONMENT VARIABLES"
.TP
.BR LANG ", " LC_ALL
See
.IR locale (7).
.TP
.B LC_CTYPE
Determines the scope of backslash as an escape character.
.TP
.B SYSV3
If this variable is set and the first argument is
.BR \-n ,
the terminating newline is not printed.
.SH "SEE ALSO"
printf(1)
.SH NOTES
It is recommended for portability that
.IR printf (1)
is used instead of
.I echo
if backslashes are to be printed
or if the trailing newline is to be omitted.