what is the use of -n option with ECHO command in Linux.
-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.
Many built-in commands to Linux have a
man page (e.g.
man ls), which is a great way to look at the
manual without having to search online.