I want to compare the two variables shown below to see if they are equivalent. What would I write?

str$="5"$

int$=5$

if $[$$str $-$eq $int$]$; then

echo "there are the same"

else

echo "they are not the same"

fi

if $[$$str $=$ $int$]$; then

echo "there are the same"

else

echo "they are not the same"

fi

if $(($$str $==$ $int$))$; then

echo "there are the same"

else

echo "they are not the same"

fi

none of the above