Implement home exam server.

roles/exam_homes/files/fetchexam

@@ -0,0 +1,23 @@
+#!/usr/bin/bash
+#
+# Backup and remove all student home directories.
+
+set -eu
+
+HDIRS='/home/'
+DIRS=()
+
+for DIR in $(find $HDIRS -maxdepth 1 -mindepth 1 -type d) ; do
+    H="$(basename $DIR)"
+    if [[ "$H" =~ ^L_ ]] || [[ "$H" =~ ansible ]] ; then
+	echo "Skipping home of '$H'."
+	continue
+    fi
+    DIRS+=("$DIR") 
+done
+[[ "${#DIRS[@]}" -eq 0 ]] && exit 0
+
+AR="homes_$(date -I).tar.gz"
+tar czf "$AR" -C "$HDIRS" --exclude='.[^/]*' \
+    -P --transform="s%$HDIRS%%" "${DIRS[@]}"
+echo "Create archive $AR containing: ${DIRS[@]}"