#ИМЯ?

Ответ 1

man echo

 -n    Do not print the trailing newline character.  This may also be achieved by appending `\c' to the end of the string, as is done
       by iBCS2 compatible systems.  Note that this option as well as the effect of `\c' are implementation-defined in IEEE Std
       1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.  Applications aiming for maximum portability are strongly encouraged to
       use printf(1) to suppress the newline character.

Многие встроенные команды для Linux имеют страницу man (например, man ls), что является отличным способом взглянуть на man ual без поиска в Интернете.