Document the SQLite utilities usage (#3344)

There is a CLI command to export from any database to a SQLite database
and also a CLI command to import a SQLite database to any database than
need to be documented.

See #961

1 files changed, 22 insertions, 1 deletions

diff --git a/docs/en/admins/05_Backup.md b/docs/en/admins/05_Backup.md
index f3ead0cca..03fb8a7d1 100644
--- a/docs/en/admins/05_Backup.md
+++ b/docs/en/admins/05_Backup.md
@@ -49,7 +49,28 @@ You can export your feed list in OPML format either from the web interface, or f
 
 ### Saving Articles
 
-To save articles, you can use [phpMyAdmin](https://www.phpmyadmin.net/) or MySQL tools, where `<db_user>` is your database username, `<db_host>` is the hostname of your web server containing your FreshRSS database, and `<freshrss_db>` is the database used by FreshRSS:
+**If you are using MySQL**  
+You can use [phpMyAdmin](https://www.phpmyadmin.net/) or MySQL tools, where `<db_user>` is your database username, `<db_host>` is the hostname of your web server containing your FreshRSS database, and `<freshrss_db>` is the database used by FreshRSS:
 ```
 mysqldump --skip-comments --disable-keys --user=<db_user> --password --host <db_host> --result-file=freshrss.dump.sql --databases <freshrss_db>
 ```
+
+**From any database**  
+You can use the [Command-Line Interface](https://github.com/FreshRSS/FreshRSS/blob/master/cli/README.md) to export your database to a SQLite database file:
+```
+./cli/export-sqlite-for-user.php --user <username> --filename </path/to/db.sqlite>
+```
+> Note that the database filename needs the `sqlite` extension in order to work properly.
+
+You can use the [Command-Line Interface](https://github.com/FreshRSS/FreshRSS/blob/master/cli/README.md) again to import the SQLite database file into your database:
+```
+./cli/import-sqlite-for-user.php --user <username> --filename </path/to/db.sqlite>
+```
+> Again, note that the database filename needs the `sqlite` extension in order to work properly.
+
+The SQLite process is useful when you need to:
+- export a user fully,
+- backup your service,
+- migrate the service to another server,
+- change database type,
+- fix database corruptions.