diff --git a/sympa/doc/migration.md b/sympa/doc/migration.md
index b75f2a1..b63b78c 100644
--- a/sympa/doc/migration.md
+++ b/sympa/doc/migration.md
@@ -79,3 +79,23 @@ alias_database = hash:/etc/aliases, hash:/etc/mail/sympa/aliases
 
 copy:
 * /etc/mail/sympa/aliases{,.db}
+
+
+### example
+
+```
+## List aliases used for the sympa mailing-list manager
+infolettre: "| /usr/lib/sympa/bin/queue infolettre@listes.artcode.re" 
+infolettre-request: "| /usr/lib/sympa/bin/queue infolettre-request@listes.artcode.re"
+infolettre-editor: "| /usr/lib/sympa/bin/queue infolettre-editor@listes.artcode.re"
+#infolettre-subscribe: "| /usr/lib/sympa/bin/queue infolettre-subscribe@listes.artcode.re"
+infolettre-unsubscribe: "| /usr/lib/sympa/bin/queue infolettre-unsubscribe@listes.artcode.re"
+infolettre-owner: "| /usr/lib/sympa/bin/bouncequeue infolettre@listes.artcode.re"
+#------------------------------ test: list alias created 10 Nov 2022
+test: "| /usr/lib/sympa/bin/queue test@listes.artcode.re" 
+test-request: "| /usr/lib/sympa/bin/queue test-request@listes.artcode.re"
+test-editor: "| /usr/lib/sympa/bin/queue test-editor@listes.artcode.re"
+#test-subscribe: "| /usr/lib/sympa/bin/queue test-subscribe@listes.artcode.re"
+test-unsubscribe: "| /usr/lib/sympa/bin/queue test-unsubscribe@listes.artcode.re"
+test-owner: "| /usr/lib/sympa/bin/bouncequeue test@listes.artcode.re"
+```
diff --git a/sympa/resources/tools/sympa_purge.bash b/sympa/resources/tools/sympa_purge.bash
index 6374446..723f312 100755
--- a/sympa/resources/tools/sympa_purge.bash
+++ b/sympa/resources/tools/sympa_purge.bash
@@ -66,7 +66,8 @@ function purge {
 		echo "$to_purge"
 		echo '------------------------'
 
-		grep ${regex@E} /etc/mail/sympa/aliases > /etc/mail/sympa/aliases
+		grep ${regex@E} /etc/mail/sympa/aliases > /etc/mail/sympa/aliases.new
+		mv /etc/mail/sympa/aliases.new /etc/mail/sympa/aliases
 		newaliases # build the `.db` version
 
 		local number_to_purge=$(echo "$to_purge" | wc -l)