HPUX - Quoting

Quoting Introduce

Many characters have 'special' meaning to the shell :
white space, carriage return, $, #, *, < >

Quoting removes the special meaning of the special characters:

eg) rm='rm -i', MYNAME="YO HAN"

Quoting - back slash (\)

$ color=red\ white\ and blue

sh: blue:  not found.

$ color=red\ white\ and\ blue

$ echo $color

red white and blue

$ echo one two \                            //carriage return

>

one two

Quoting - '  , Removes the special meaning of all characters surrounded by the single quotes

$ color='red white and blue'

$ echo 'the value of \$color is $color'

the value of \$color is $color

Quoting - " , Removes the special meaning of all characters surrounded by double quotes except \, $variable name, $(cmd), and "

$ echo "the value of \$color is $color"

the value of $color is red white and blue

end of book1

* man sh-posix     //필요한 것들은 참조를 하자