Created SC2067 (markdown)

SC2067.md

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+## Missing ';' or + terminating -exec. You can't use |/||/&&, and ';' has to be a separate, quoted argument.
+
+### Problematic code:
+
+    find . -type f -exec shellcheck {} | wc -l \;
+    find . -exec echo {} ;
+
+### Correct code:
+
+    find . -type f -exec sh -c 'shellcheck "$1" | wc -l' -- {} \;
+    find . -exec echo {} \;
+
+### Rationale:
+
+`find -exec` is still subject to all normal shell rules, so all shell features like `|`, `||`, `&` and `&&` will apply to the `find` command itself, and not to the command you are trying to construct with `-exec`.
+
+`find . -exec foo {} && bar {} \;` means run the command `find . -exec foo {}`, and if find is successful, run the command `bar "{}" ";"`. 
+
+To instead go through each file and run `foo file && bar file` on it, invoke a shell that can interpret `&&`:
+
+    find . -exec sh 'foo "$1" && bar "$1"' -- {} \;
+
+You can also use find `-a` instead of shell `&&`:
+
+    find . -exec foo {} \; -a -exec bar {} \;
+
+This will have the same effect (`-a` is also the default when two commands are specified, and can therefore be omitted).
+
+### Contraindications
+
+None