macOS Sierra: Haskell (programming language): Hello, World! Program

Command:

$ cat helloworld.hs


Result:

main = putStrLn "Hello, World!"


Command:

$ ghc helloworld.hs


Result:

[1 of 1] Compiling Main             ( helloworld.hs, helloworld.o )
Linking helloworld ...


Command:

$ ./helloworld


Result:

Hello, World!

Ubuntu: Dialog: Installation and Hello World

Command:

$ sudo apt-get install dialog


Result:

[sudo] password for USERNAME:
Reading package lists... Done
Building dependency tree      
Reading state information... Done
The following NEW packages will be installed:
  dialog
0 upgraded, 1 newly installed, 0 to remove and 3 not upgraded.
Need to get 215 kB of archives.
After this operation, 1,138 kB of additional disk space will be used.
Get:1 http://jp.archive.ubuntu.com/ubuntu yakkety/universe amd64 dialog amd64 1.3-20160424-1 [215 kB]
Fetched 215 kB in 0s (1,258 kB/s)
Selecting previously unselected package dialog.
(Reading database ... 88450 files and directories currently installed.)
Preparing to unpack .../dialog_1.3-20160424-1_amd64.deb ...
Unpacking dialog (1.3-20160424-1) ...
Setting up dialog (1.3-20160424-1) ...
Processing triggers for man-db (2.7.5-1) ...


Command:

$ dialog --title "Hello" --msgbox 'Hello World!' 6 20


Graphical output:

Bash dialog Hello World!

macOS Sierra: SWI-Prolog: Hello, World!

Command:

$ cat helloworld.swi


Result:

main :-
write('Hello, World!\n').


Command:

$ swipl


Result:

Welcome to SWI-Prolog (Multi-threaded, 64 bits, Version 7.2.3)
Copyright (c) 1990-2015 University of Amsterdam, VU Amsterdam
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit http://www.swi-prolog.org for details.

For help, use ?- help(Topic). or ?- apropos(Word).


Command:

?- ['helloworld.swi'].


Result:

true.


Command:

?- main.


Result:

Hello, World!
true.