make command output more Kik compliant

lab1/4.bash

@@ -2,6 +2,6 @@
   
 for word in $(grep -Roh '\w*' "$1" | sort | uniq)
 do
-    echo "current word: $word"
-    grep -Rw "$word" "$1"
+    echo "$word:"
+    grep -Rwn "$word" "$1"
 done

lab1/6.bash

@@ -2,6 +2,6 @@
 
 for word in $(grep -Roh '\w*' "$1" | sort | uniq)
 do
-    echo "current word: $word"
-    grep -RE "($word.*){2}" "$1"
+    occurences=$(grep -REn "($word.*){2}" "$1")
+    [ -n "$occurences" ] && printf '%s:\n%s\n' "$word" "$occurences"
 done