ECHO(1B) BSD Compatibility Package Commands ECHO(1B)


NAME


echo - echo arguments to standard output

SYNOPSIS


/usr/ucb/echo [-n] [argument]


DESCRIPTION


echo writes its arguments, separated by BLANKs and terminated by a
NEWLINE, to the standard output.


echo is useful for producing diagnostics in command files and for sending
known data into a pipe, and for displaying the contents of environment
variables.


For example, you can use echo to determine how many subdirectories below
the root directory (/) is your current directory, as follows:

o echo your current-working-directory's full pathname

o pipe the output through tr to translate the path's embedded
slash-characters into space-characters

o pipe that output through wc -w for a count of the names in
your path.

example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"


See tr(1) and wc(1) for their functionality.


The shells csh(1), ksh(1), and sh(1), each have an echo built-in command,
which, by default, will have precedence, and will be invoked if the user
calls echo without a full pathname. /usr/ucb/echo and csh's echo() have
an -n option, but do not understand back-slashed escape characters. sh's
echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand
the black-slashed escape characters, and ksh's echo() also understands \a
as the audible bell character; however, these commands do not have an -n
option.

OPTIONS


-n
Do not add the NEWLINE to the output.


SEE ALSO


csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)

NOTES


The -n option is a transition aid for BSD applications, and may not be
supported in future releases.


August 3, 1994 ECHO(1B)