如何从命令行运行SWI-Prolog? [英] How to run SWI-Prolog from the command line?
问题描述
有一种方法可以创建一个名为 hello.pl
的prolog脚本:
#!/ usr / local / bin / swipl -q -s -t main
main: -
write('Hello World\\\
')。
并且能够像这样从终端运行它吗?
$ hello.pl
Hello World
$
当我这样做时,它给我这个:
hello.pl:line 3:main : - :command not found
hello.pl:line 4:语法错误接近意外的标记Hello World\\\
hello.pl:line 4:`write('Hello World\ ''
我可以通过在命令行上写这个工作: / p>
$ swipl -q -f hello.pl -t main
Hello World
$
但是有没有办法只是将直接脚本作为可执行文件运行?
编辑
尚未能使此功能生效。这是命令@Boris在他的回答中的注释中的输出:
$ ls -l
total 8
-rwxr-xr-x 1 viatropos staff 235 Aug 26 20:28 example.pl
$ cat example.pl
#!/ usr / local / bin / swipl
: - set_prolog_flag(verbose,silent)。
: - 初始化main。
main: -
格式('示例脚本〜n'),
current_prolog_flag(argv,Argv),
格式,[Argv]),
halt。
main: -
halt(1)。
$ which swipl
/ usr / local / bin / swipl
$ swipl --version
SWI-Prolog版本6.6.6 for x86_64-darwin13.1.0
$ ./example.pl
./example.pl:line 3:接近意外标记的语法错误('
./example.pl:line 3:`: - set_prolog_flag(verbose,silent)。
$
我在Mac OSX 10.9.2上安装swipl和homebrew通过 brew install swi-prolog --with-libarchive
ISO指令: 初始化。这应该可以正常工作。
: - 初始化main。
main: -
write('Hello World\\\
')。
对不起,我跳过了最有趣的细节,下面是一个示例脚本,让我们说保存在〜/ test / main.pl #!/ home / carlo / bin / swipl -f -q
: - 初始化main。
main: -
current_prolog_flag(argv,Argv),
format('Hello World,argv:〜w\\\
' ,[Argv]),
halt(0)。
且可执行
chmod + x〜/ test / main.pl
/ p>
〜$〜/ test / main.pl
Hello World,argv:[]
$ b b〜$〜/ test / main.pl as,dnj asdl
Hello World,argv:[as,dnj,asdl]
在脚本 main.pl
中,我使用了从没有管理员权限的源代码生成的swipl路径。 SWI-Prolog构建过程将bin和lib放在〜/ bin和〜/ lib
下
注意:-f标志禁用加载初始化〜/ .plrc,可能需要更多的严格控制执行...
我目前不确定文档页面是否是最新的当前软件状态。从一些邮件列表消息,以及我自己重用 thea ,似乎命令行标记最近...
Is there a way to just create a prolog script called hello.pl
like this:
#!/usr/local/bin/swipl -q -s -t main
main:-
write('Hello World\n').
And be able to run it from the terminal like this?
$ hello.pl
Hello World
$
When I do that it gives me this:
hello.pl: line 3: main:-: command not found
hello.pl: line 4: syntax error near unexpected token `'Hello World\n''
hello.pl: line 4: ` write('Hello World\n').'
I am able to get it working by writing this on the command line:
$ swipl -q -f hello.pl -t main
Hello World
$
But is there a way to just run the straight script as an executable instead?
Edit
Haven't yet been able to get this to work. Here is the output from the commands @Boris asked in the comments in his answer:
$ ls -l
total 8
-rwxr-xr-x 1 viatropos staff 235 Aug 26 20:28 example.pl
$ cat example.pl
#!/usr/local/bin/swipl
:- set_prolog_flag(verbose, silent).
:- initialization main.
main :-
format('Example script~n'),
current_prolog_flag(argv, Argv),
format('Called with ~q~n', [Argv]),
halt.
main :-
halt(1).
$ which swipl
/usr/local/bin/swipl
$ swipl --version
SWI-Prolog version 6.6.6 for x86_64-darwin13.1.0
$ ./example.pl
./example.pl: line 3: syntax error near unexpected token `('
./example.pl: line 3: `:- set_prolog_flag(verbose, silent).'
$
I am on Mac OSX 10.9.2, and installed swipl with homebrew via brew install swi-prolog --with-libarchive
解决方案 ISO directive: initialization. This should work.
:- initialization main.
main :-
write('Hello World\n').
edit sorry, I skipped over most interesting details. Here is a sample script, let's say saved in ~/test/main.pl
#!/home/carlo/bin/swipl -f -q
:- initialization main.
main :-
current_prolog_flag(argv, Argv),
format('Hello World, argv:~w\n', [Argv]),
halt(0).
and made executable with
chmod +x ~/test/main.pl
then I get
~$ ~/test/main.pl
Hello World, argv:[]
~$ ~/test/main.pl as,dnj asdl
Hello World, argv:[as,dnj,asdl]
In script main.pl
, I used the swipl path that results from building from source without admin privileges. The SWI-Prolog build process put bin and lib under ~/bin and ~/lib
Note: the -f flag disables loading the initialization ~/.plrc, and this could be necessary to get more 'strict control' over execution...
I'm currently unsure if the documentation page is up-to-date with current SW status. From some mailing list message, and my own efforts to reuse thea, seems that command line flags changed recently...
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