echo [options] [string, variables…]
Displays text or variables value on screen.
Options
-n Do not output the trailing new line.
-e Enable interpretation of the following backslash escaped characters in the strings:
a alert (bell)
b backspace
c suppress trailing new line
n new line
r carriage return
t horizontal tab
\ backslash
For eg. $ echo -e “An apple a day keeps away attdoctorn”
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