solved problem 2

responses/2-parse-columns.sh

+#!/bin/bash
+
+user=$1
+homedir=""
+input="/etc/passwd"
+
+while read -r line
+do
+	parseuser=$(echo $line | cut -d":" -f1)
+	if [ $parseuser == $user ]
+	then
+		homedir="$(echo $line | cut -d":" -f6)"
+	fi
+done < "$input"
+
+if [$homedir == ""]
+then
+	echo "User \"$user\" not found"
+else 
+	echo "Home directory: $homedir"
+fi