testdisk: add page (#23208)

pages/common/testdisk.md

@@ -0,0 +1,25 @@
+# testdisk
+
+> Scan and repair disk partitions.
+> See also: `photorec`, `fdisk`.
+> More information: <https://manned.org/testdisk>.
+
+- Start TestDisk on a specific device:
+
+`sudo testdisk {{/dev/sdX}}`
+
+- Start TestDisk on a disk image:
+
+`sudo testdisk {{path/to/image.dd}}`
+
+- Start TestDisk and create a log file (`testdisk.log`):
+
+`sudo testdisk /log {{/dev/sdX}}`
+
+- List current partitions:
+
+`sudo testdisk /list`
+
+- Display version:
+
+`testdisk /version`