首先來看一段BASH程式碼：

echo "\[email protected]=" [email protected]
echo "\"\[email protected]\"=" "[email protected]"

echo "print each param from \[email protected]"
for var in [email protected]
do
        echo $var
done

echo "print each param from \"\[email protected]\""
for var in "
 
[email protected]"
do
        echo "$var"
done

echo "print each param from \$*"
for var in $*
do
        echo "$var"
done

echo "print each param from \"\$*\""
for var in "$*"
do
        echo "$var"
done

[email protected]= a a b c d
"[email protected]
 
"= a a b c d
print each param from [email protected]
a
a
b
c
d
print each param from "[email protected]"
a a
b
c
d
print each param from $*
a
a
b
c
d
print each param from "$*"
a a b c d