## To build: ``` make all ``` ## To use: ``` ./korn ``` ## Judges' remarks: The Judges believe that this is the best one line entry ever received. Compile on a UNIX system, or at least one using a C implementation that fakes it. Very few people are able to determine what this program does by visual inspection. I suggest that you stop reading this section right now and see if you are one of the few people who can. Several points are important to understand this program: 1. What is the symbol `unix` and what is its value in the program? Clearly `unix` is not a function, and since `unix` is not declared to be a data type (such as `int`, `char`, `struct foo`, `enum`, ...) what must `unix` be? 2. What is the value of the symbol `"have"`? (hint: the value is NOT 4 characters, or `'h'`, or a string) Consider the fact that: ``` char *x; ``` defines a pointer to a `char` (i.e. an address), and that the `=` assigns things of compatible types. Since: ``` x = "have"; ``` is legal C, what type of value is `"have"`? 3. Note that the following expressions yield the same value: ``` x[3] *(x+3) *(3+x) ``` since addition is commutative. What can be said about this value? ``` 3[x] ``` [David Korn](https://news.slashdot.org/story/01/02/06/2030205/david-korn-tells-all)'s [/bin/ksh](https://en.wikipedia.org/wiki/KornShell) provides us with a greatly improved version of the [/bin/sh](https://en.wikipedia.org/wiki/Bourne_shell). The source for [v7](https://en.wikipedia.org/wiki/Version_7_Unix)'s /bin/sh greatly inspired this contest. ## Author's remarks: No remarks were provided by the author.