tlmgr-check: add page (#6586)

pages/common/tlmgr-check.md

@@ -0,0 +1,28 @@
+# tlmgr check
+
+> Check the consistency of a TeX Live installation.
+> More information: <https://www.tug.org/texlive/tlmgr.html>.
+
+- Check the consistency of the whole TeX Live installation:
+
+`tlmgr check all`
+
+- Check the consistency of the whole TeX Live information in verbose mode:
+
+`tlmgr check all -v`
+
+- Check for missing dependencies:
+
+`tlmgr check depends`
+
+- Check if all TeX Live executables are present:
+
+`tlmgr check executes`
+
+- Check if all files listed in the local TLPDB are present:
+
+`tlmgr check files`
+
+- Check for duplicate filenames in the runfiles sections:
+
+`tlmgr check runfiles`