Write example codes in your scripts for the following expressions using (),{},[] and show your output Arithmetic expression Parameter expansion with variable indirection Command substitution Conditional statement

answer; its the top layer;

do not use any of these common illegal characters/symbols:

# pound

% percent

& ampersand

{ left curly bracket

} right curly bracket

\ back slash

< left angle bracket

> right angle bracket

* asterisk

? question mark

/ forward slash

  blank spaces

$ dollar sign

! exclamation point

' single quotes

" double quotes

: colon

@ at sign