bilingual scripts, bash/PHP?
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Newsgroups: alt.os.linux
From:
crankypuss <n... @email.thanks> Date: Fri, 20 Jan 2012 02:48:23 -0700
Local: Fri, Jan 20 2012 4:48 am
Subject: bilingual scripts, bash/PHP?
Okay, a bash script has to start with this:
#!/bin/bash
And a PHP script begins suchly:
#!/usr/bin/php
The question is, how can one code a script that will run PHP if it's
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From:
Richard Kettlewell <r... @greenend.org.uk> Date: Fri, 20 Jan 2012 10:26:30 +0000
Local: Fri, Jan 20 2012 5:26 am
Subject: Re: bilingual scripts, bash/PHP?
crankypuss <n
... @email.thanks> writes:
> Okay, a bash script has to start with this:
> #!/bin/bash
> And a PHP script begins suchly:
> #!/usr/bin/php
> The question is, how can one code a script that will run PHP if it's
Possibly easier to do it the other way around (certainly so for me since
I don't speak PHP).
#! /bin/bash
-- http://www.greenend.org.uk/rjk/
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From:
Richard Kettlewell <r... @greenend.org.uk> Date: Fri, 20 Jan 2012 10:53:56 +0000
Local: Fri, Jan 20 2012 5:53 am
Subject: Re: bilingual scripts, bash/PHP?
Richard Kettlewell <r
... @greenend.org.uk> writes:
> crankypuss <n
... @email.thanks> writes:
>> Okay, a bash script has to start with this:
>> #!/bin/bash
>> And a PHP script begins suchly:
>> #!/usr/bin/php
>> The question is, how can one code a script that will run PHP if it's
> Possibly easier to do it the other way around (certainly so for me since
> #! /bin/bash
Should be:
exec php /path/to/php/script "$@"
of course, to be fully general.
-- http://www.greenend.org.uk/rjk/
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From:
crankypuss <n... @email.thanks> Date: Fri, 20 Jan 2012 05:26:16 -0700
Local: Fri, Jan 20 2012 7:26 am
Subject: Re: bilingual scripts, bash/PHP?
On 01/20/2012 03:53 AM, Richard Kettlewell wrote:
> Richard Kettlewell<r
... @greenend.org.uk> writes:
>> crankypuss<n... @email.thanks> writes:
>>> #!/bin/bash
>>> And a PHP script begins suchly:
>>> #!/usr/bin/php
>>> The question is, how can one code a script that will run PHP if it's
>> Possibly easier to do it the other way around (certainly so for me since
>> #! /bin/bash
> Should be:
Thanks, I thought there might be some funky commenting conventions set
up so that whichever language is there sees only its own code.
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From:
Jasen Betts <ja... @xnet.co.nz> Date: 20 Jan 2012 12:24:33 GMT
Local: Fri, Jan 20 2012 7:24 am
Subject: Re: bilingual scripts, bash/PHP?
On 2012-01-20, crankypuss <n
... @email.thanks> wrote:
> Okay, a bash script has to start with this:
> #!/bin/bash
> And a PHP script begins suchly:
> #!/usr/bin/php
> The question is, how can one code a script that will run PHP if it's
no. the kernels's going to try to launch whatever interpreter you name on
the first line.
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From:
Eef Hartman <E.J.M.Hart... @tudelft.nl> Date: Fri, 20 Jan 2012 14:12:34 +0100
Local: Fri, Jan 20 2012 8:12 am
Subject: Re: bilingual scripts, bash/PHP?
crankypuss <n
... @email.thanks> wrote:
> Thanks, I thought there might be some funky commenting conventions set
> up so that whichever language is there sees only its own code.
The #! line in a script only tells the running shell (the cli)
_which_ program to start to execute this script.
The default, when no #! first line is present is "a copy of itself",
so bash if your default shell is (ba)sh or tcsh when THAT is your
default shell (or even ksh when you're using that).
That is also why you can also use <?php in .html webpages, as long
as the httpd knows how to find php TO execute it with.
--
******************************************************************
** Eef Hartman, Delft University of Technology, dept. SSC/ICT **
** e-mail: E.J.M.Hart
... @tudelft.nl - phone: +31-15-27 82525 **
******************************************************************
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From:
Eef Hartman <E.J.M.Hart... @tudelft.nl> Date: Fri, 20 Jan 2012 14:15:40 +0100
Local: Fri, Jan 20 2012 8:15 am
Subject: Re: bilingual scripts, bash/PHP?
Jasen Betts <ja
... @xnet.co.nz> wrote:
> no. the kernels's going to try to launch whatever interpreter
^^^^^^^
shell, the kernel doesn't start any scripts, can only handle
binary executables (fork/exec calls etc, scripts are handled
through the system call, which will start a shell).
--
******************************************************************
** Eef Hartman, Delft University of Technology, dept. SSC/ICT **
** e-mail: E.J.M.Hart
... @tudelft.nl - phone: +31-15-27 82525 **
******************************************************************
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From:
Richard Kettlewell <r... @greenend.org.uk> Date: Fri, 20 Jan 2012 14:02:36 +0000
Local: Fri, Jan 20 2012 9:02 am
Subject: Re: bilingual scripts, bash/PHP?
Eef Hartman <E.J.M.Hart
... @tudelft.nl> writes:
> Jasen Betts <ja
... @xnet.co.nz> wrote:
>> no. the kernels's going to try to launch whatever interpreter
> ^^^^^^^
> shell, the kernel doesn't start any scripts, can only handle
> binary executables (fork/exec calls etc, scripts are handled
> through the system call, which will start a shell).
That is not correct. #! is implemented by the kernel.
-- http://www.greenend.org.uk/rjk/
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From:
J G Miller <mil... @yoyo.ORG> Date: Fri, 20 Jan 2012 15:45:37 +0000 (UTC)
Local: Fri, Jan 20 2012 10:45 am
Subject: Re: bilingual scripts, bash/PHP?
On Friday, January 20th, 2012, 14:02:36h +0000, Richard Kettlewell wrote:
So the kernel then calls the appropriate interpreter viz
sh, perl, wish etc, yes?
And if you set up binfmt kernel module appropriately, you
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From:
Jasen Betts <ja... @xnet.co.nz> Date: 20 Jan 2012 20:13:25 GMT
Local: Fri, Jan 20 2012 3:13 pm
Subject: Re: bilingual scripts, bash/PHP?
On 2012-01-20, crankypuss <n
... @email.thanks> wrote:
> Okay, a bash script has to start with this:
> #!/bin/bash
> And a PHP script begins suchly:
> #!/usr/bin/php
> The question is, how can one code a script that will run PHP if it's
probably the best you can do is put is use /bin/sh as the interpreter
abd put
[ -e /usr/bin/php ] && exec /usr/bin/php "$0" "$@"
The next line should check for bash (is it's not itself bash, it
you're guaranteed /bin/sh (which culd be ash, dash etc for example)
/bin/bash and /usr/bin/php are both optional.
getting bash and php to understand the script to mean the same thing
having explained why it's impossible here's how to almost do it!
#!/bin/sh
[ -e /usr/bin/php ] && exec /usr/bin/php "$0" "$@"
echo hello from bash, args are "$0" "$*"
exec true <<EOF*/ #PHP starts here
echo "hello from php, args follow.\n";
/* end-of-file marker:
you'll note that php emits the '#' from the second line, I've not
there are also some restrictions, the bash part can't cointain the string */
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From:
crankypuss <n... @email.thanks> Date: Fri, 20 Jan 2012 14:09:18 -0700
Local: Fri, Jan 20 2012 4:09 pm
Subject: Re: bilingual scripts, bash/PHP?
On 01/20/2012 01:13 PM, Jasen Betts wrote:
> On 2012-01-20, crankypuss<n
... @email.thanks> wrote:
>> Okay, a bash script has to start with this:
>> #!/bin/bash
>> And a PHP script begins suchly:
>> #!/usr/bin/php
>> The question is, how can one code a script that will run PHP if it's
> probably the best you can do is put is use /bin/sh as the interpreter
> [ -e /usr/bin/php ]&& exec /usr/bin/php "$0" "$@"
> The next line should check for bash (is it's not itself bash, it
> you're guaranteed /bin/sh (which culd be ash, dash etc for example)
> /bin/bash and /usr/bin/php are both optional.
> getting bash and php to understand the script to mean the same thing
> having explained why it's impossible here's how to almost do it!
> #!/bin/sh
> [ -e /usr/bin/php ]&& exec /usr/bin/php "$0" "$@"
> echo hello from bash, args are "$0" "$*"
> exec true<<EOF*/ #PHP starts here
> echo "hello from php, args follow.\n";
> /* end-of-file marker:
> you'll note that php emits the '#' from the second line, I've not
> there are also some restrictions, the bash part can't cointain the string */
Thanks.
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