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

From: Lei Wang
Subject: Re: Could someone give me a hint how to write my own function based on tramp?
Date: Sun, 5 Sep 2010 09:51:48 +0800

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

It's very helpful. Thanks you all!

On 9/5/10, Michael Albinus <> wrote:
> Lei Wang <> 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.


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