Re: Could someone give me a hint how to write my own function based on tramp?

[Lei Wang]

Thank you very much! Now, i know how to do it.

It's very helpful. Thanks you all!

On 9/5/10, Michael Albinus <michael.albinus@gmx.de> wrote:
> Lei Wang <f3d27b@gmail.com> writes:
>
>>>> I want to write a function for my own use. It is going to be a wraper of
>>>> an
>>>> operation sequence, such as, change to root, run some shell and create
>>>> and
>>>> open a file. But i even can't find to use which tramp function, and how
>>>> does
>>>> tramp start.
>>>
>>> Yeah.  You probably won't find TRAMP much help in writing that, frankly,
>>> because it does a lot of things that are entirely irrelevant but quite
>>> complex
>>> compared to what you want.
>>
>> Thanks for this information.
>
> Likely, you don't need to think about Tramp at all. When you operate
> with a default-directory pointing to your remote host, Emacs' functions
> like `shell', `process-file' and `start-file-process' work on the remote
> host. Whether it is Tramp or not, is not relevant.
>
> (Tramp works in the background for you. It requires Tramp 2.1, also part
> of Emacs 23)
>
>> Ok. Nowadays, when i want to access a crypto partition, i do the
>> following steps, open a shell, su to root, /sbin/cryptsetup luksOpen,
>> mount, create a file, edit, save, umount, /sbin/cryptsetup luksClose.
>> It's very annoying. So i want to make a wrapper function. Of course,
>> the 2 times  password inputs couldn't be bypassed.
>
> (let ((default-directory "/su::/"))
>   ... do your actions ...
>   )
>
>> Regards,
>> Lei
>
> Best regards, Michael.
>


-- 
Regards,
Lei