\c produce no further output
\f form feed
\n new line
\r carriage return
\t horizontal tab
\v vertical tab
\0NNN byte with octal value NNN (1 to 3 digits)
\xHH byte with hexadecimal value HH (1 to 2 digits)
NOTE: your shell may have its own version of echo, which usually super‐
sedes the version described here. Please refer to your shell’s documen‐
tation for details about the options it supports.
Written by Brian Fox and Chet Ramey.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report echo translation bugs to <http://translationproject.org/team/>
Copyright © 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL
version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Full documentation at: <http://www.gnu.org/software/coreutils/echo>
or available locally via: info ‘(coreutils) echo invocation’