Update cheatsheets

idnits

@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# idnits
+
+> Check internet-drafts for submission nits.
+> Looks for violations of Section 2.1 and 2.2 of the requirements listed on <https://www.ietf.org/id-info/checklist>.
+> More information: <https://tools.ietf.org/tools/idnits/>.
+
+- Check a file for nits:
+
+`idnits {{path/to/file.txt}}`
+
+- Count nits without displaying them:
+
+`idnits --nitcount {{path/to/file.txt}}`
+
+- Show extra information about offending lines:
+
+`idnits --verbose {{path/to/file.txt}}`
+
+- Expect the specified year in the boilerplate instead of the current year:
+
+`idnits --year {{2021}} {{path/to/file.txt}}`
+
+- Assume the document is of the specified status:
+
+`idnits --doctype {{standard|informational|experimental|bcp|ps|ds}} {{path/to/file.txt}}`