Migration: fix cd from deleted directory

migration/repo.sh

@@ -78,7 +78,7 @@ clean_tex()
     then
 	git mv * ..
     fi
-    cd ..
+    cd - > /dev/null
 
     if [ -f "mySubject.md" ]
     then
@@ -124,9 +124,9 @@ then
     exit 4
 fi
 
-cd ..
+cd - > /dev/null
 
-rm -rf "$1"
+mv "$1" "$1.hg"
 
 git clone "$TMPDIR/repo.git" "$1"
 
@@ -207,13 +207,13 @@ do
 	do
 	    if [ -f "$D/template.xml" ]
 	    then
-		`dirname $0`/defense_converter.pl -o "$D.xml" "$D/template.xml"
+		perl `dirname $0`/defense_converter.pl -o "$D.xml" "$D/template.xml"
 		git add "$D.xml"
 		echo -e "\e[1;35m>>>\e[1;37m Defense converted:\e[0m $D"
 	    fi
 	    git rm -rf "$D" > /dev/null
 	done
-	cd ..
+	cd - > /dev/null
 	echo -e "\e[1;35m## ## ## ## ##\e[0m"
 	echo
 
@@ -270,7 +270,7 @@ do
 		git rm -rf "$f" > /dev/null
 	    fi
 	done
-	cd ..
+	cd - > /dev/null
     fi
 done