This manual page
documents the GNU version of
reads arguments from the standard input, delimited by blanks (which can be
protected with double or single quotes or a backslash) or newlines,
and executes the
(default is /bin/echo) one or more times with any
followed by arguments read from standard input. Blank lines on the
standard input are ignored.
exits with the following status:
0 if it succeeds
123 if any invocation of the command exited with status 1-125
124 if the command exited with status 255
125 if the command is killed by a signal
126 if the command cannot be run
127 if the command is not found
1 if some other error occurred.