chore: add ch 5-6

cleanfile

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+SED=$(
+    while IFS=$'\t' read -r -a myArray
+    do
+    echo -ne "s_"${myArray[0]}"_"${myArray[1]}"_g;\n"
+    done < replacements
+)
+
+echo  sed -e "$SED"
+cat $1 | sed -e "$SED" | sed -z 's_-\n__g'> $2
+
+