Created SC2276 (markdown)

SC2276.md

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+## This is interpreted as a command name containing '='. Bad assignment or comparison?
+
+### Problematic code:
+
+```sh
+"$var"=42
+if "$var"=42
+then
+  true
+fi
+```
+
+### Correct code:
+
+```sh
+var=42
+if [ "$var" = 42 ]
+then
+  true
+fi
+```
+
+### Rationale:
+
+ShellCheck found a command name containing an unquoted equals sign `=`. This was likely intended as either a comparison or an assignment.
+
+To compare two values, use e.g. `[ "$var" = "42" ]`
+
+To assign a value, use e.g. `var="42"`
+
+### Exceptions:
+
+None, though you can quote the `=` to make ShellCheck ignore it: `"$var=42"`.
+
+### Related resources:
+
+* Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!