$1.$ What does this do$?$

if $[$ $# $-$eq $0]$; then

echo $$No arguments$$

fi

$2.$ What does this do$?$

if $[$$name$=$Bro$]$; then

echo $$Welcome back bro!$$

fi

$3.$ Explain the difference between $$eq and $=$ in the previous $2$ questions.

$4.$ What does this do$?$

if $["$$word$1"="$$word$2"]$; then

echo $$They match$$

else

echo $$The are different$$

fi

$5.$ What does echo $$Error$1>$&$2$ do$?$

$6.$ What does this do$?$

for color in red white blue; do

echo $color

done

$7.$ What does this do$?$

for x; do

echo $x

done

$8.$ What do the while and until constructs do$?$

$9.$ How are the while and until constructs different?

$10.$ What is the purpose of the case construct?