fprintd-verify: add page (#7178)

pages/linux/fprintd-verify.md

@@ -0,0 +1,28 @@
+# fprintd-verify
+
+> Verify fingerprints against the database.
+> More information: <https://manned.org/fprintd-verify>.
+
+- Verify all stored fingerprints for the current user:
+
+`fprintd-verify`
+
+- Verify a specific fingerprint for the current user:
+
+`fprintd-verify --finger {{left-thumb|left-index-finger|left-middle-finger|left-ring-finger|left-little-finger|right-thumb|right-index-finger|right-middle-finger|right-ring-finger|right-little-finger}}`
+
+- Verify fingerprints for a specific user:
+
+`fprint-verify {{username}}`
+
+- Verify a specific fingerprint for a specific user:
+
+`fprintd-verify --finger {{finger_name}} {{username}}`
+
+- Fail the process if a fingerprint doesn't match with ones stored in the database for the current user:
+
+`fprint-verify --g-fatal-warnings`
+
+- Display help:
+
+`fprintd-verify --help`