1. What does this do? if [ $# -eq 0 ]; then echo "No arguments" fi What does this do? if [ "$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 [ "$word1" = "Sword2" ]; then echo "They match" else echo "The are different" 5. What does echo "Error 1>&2 do