Running bash inside emacs

Running bash inside emacs

[Madhusudan Singh]

Hi

 I was wondering if it is possible to run a bash shell inside an emacs
buffer (where the up and down keys recall commands executed
in .bash_history and do not move the cursor around -- the problem with the
native shell available in emacs, tab results in command completion, etc.).

Thanks.

Re: Running bash inside emacs

[Pascal Bourguignon]

Madhusudan Singh <spammers-go-here@spam.invalid> writes:
>  I was wondering if it is possible to run a bash shell inside an emacs
> buffer (where the up and down keys recall commands executed
> in .bash_history and do not move the cursor around -- the problem with the
> native shell available in emacs, tab results in command completion, etc.).

M-x shell RET

Since emacs implement its own history and completion, the keys are
usually bound to emacs functions, and not passed to the inferior
shell.  

If you want to run an old command from ~/.bash_history, you could type:

sort -u < ~/.bash_history

then move to the line with the command and type RET.



-- 
__Pascal Bourguignon__                     http://www.informatimago.com/
Cats meow out of angst
"Thumbs! If only we had thumbs!
We could break so much!"

Re: Running bash inside emacs

[Madhusudan Singh]

Pascal Bourguignon wrote:

> Madhusudan Singh <spammers-go-here@spam.invalid> writes:
>>  I was wondering if it is possible to run a bash shell inside an emacs
>> buffer (where the up and down keys recall commands executed
>> in .bash_history and do not move the cursor around -- the problem with
>> the native shell available in emacs, tab results in command completion,
>> etc.).
> 
> M-x shell RET
> 
> Since emacs implement its own history and completion, the keys are
> usually bound to emacs functions, and not passed to the inferior
> shell.
> 
> If you want to run an old command from ~/.bash_history, you could type:
> 
> sort -u < ~/.bash_history
> 
> then move to the line with the command and type RET.
> 
> 
> 

Thanks for your response. I posted this question because I am not
comfortable with the solution you showed.

Typing in sort commands, etc. when you can just open up a native bash shell
and use up/down keys to your heart's content, does not make any sense at
all. This is especially important when you are debugging some code and need
access to the shell, repeatedly. The solution you list would be a
horrendous waste of typing and time in that case.

Maybe it is time for a M-x bash RET.

Re: Running bash inside emacs

[Walker Pendleton]

On  3 May 2005, Madhusudan Singh wrote:

[...]

> Typing in sort commands, etc. when you can just open up a native
> bash shell and use up/down keys to your heart's content, does not
> make any sense at all.

[...]

> Maybe it is time for a M-x bash RET.

If you don't see any sense in getting Emacs to help you, but merely
want to run your shell in Emacs, perhaps M-x term RET will be more to
your liking.

Re: Running bash inside emacs

[Madhusudan Singh]

Walker Pendleton wrote:

> On  3 May 2005, Madhusudan Singh wrote:
> 
> [...]
> 
>> Typing in sort commands, etc. when you can just open up a native
>> bash shell and use up/down keys to your heart's content, does not
>> make any sense at all.
> 
> [...]
> 
>> Maybe it is time for a M-x bash RET.
> 
> If you don't see any sense in getting Emacs to help you, but merely
> want to run your shell in Emacs, perhaps M-x term RET will be more to
> your liking.

Precisely what I was looking for. Thanks !!

Re: Running bash inside emacs

[J. David Boyd]

Madhusudan Singh <spammers-go-here@spam.invalid> writes:

> Pascal Bourguignon wrote:
> 
> Thanks for your response. I posted this question because I am not
> comfortable with the solution you showed.
> 
> Typing in sort commands, etc. when you can just open up a native bash shell
> and use up/down keys to your heart's content, does not make any sense at
> all. This is especially important when you are debugging some code and need
> access to the shell, repeatedly. The solution you list would be a
> horrendous waste of typing and time in that case.
> 
> Maybe it is time for a M-x bash RET.

I use Ctrl-UpArrow and Ctrl-DownArrow to scroll through my history list, and I
have my default shell set to be bash.  Works fine.

Dave

Re: Running bash inside emacs

[Tim X]

Madhusudan Singh <spammers-go-here@spam.invalid> writes:

> Pascal Bourguignon wrote:
>
>> Madhusudan Singh <spammers-go-here@spam.invalid> writes:
>>>  I was wondering if it is possible to run a bash shell inside an emacs
>>> buffer (where the up and down keys recall commands executed
>>> in .bash_history and do not move the cursor around -- the problem with
>>> the native shell available in emacs, tab results in command completion,
>>> etc.).
>> 
>> M-x shell RET
>> 
>> Since emacs implement its own history and completion, the keys are
>> usually bound to emacs functions, and not passed to the inferior
>> shell.
>> 
>> If you want to run an old command from ~/.bash_history, you could type:
>> 
>> sort -u < ~/.bash_history
>> 
>> then move to the line with the command and type RET.
>> 
>> 
>> 
>
> Thanks for your response. I posted this question because I am not
> comfortable with the solution you showed.
>
> Typing in sort commands, etc. when you can just open up a native bash shell
> and use up/down keys to your heart's content, does not make any sense at
> all. This is especially important when you are debugging some code and need
> access to the shell, repeatedly. The solution you list would be a
> horrendous waste of typing and time in that case.
>

You have a number of choices -

M-x term <ret>

M-x shell <ret> (note you need to use C-up/C-down to get the command
line history.

Also, don't discount eshell too quickly - it is very powerful and
offers a lot of functionality which is not obvious straight away.

Tim



-- 
Tim Cross
The e-mail address on this message is FALSE (obviously!). My real e-mail is
to a company in Australia called rapttech and my login is tcross - if you 
really need to send mail, you should be able to work it out!

Re: Running bash inside emacs

[Phillip Lord]

>>>>> "Madhusudan" == Madhusudan Singh <spammers-go-here@spam.invalid> writes:

  Madhusudan> Thanks for your response. I posted this question because
  Madhusudan> I am not comfortable with the solution you showed.

  Madhusudan> Typing in sort commands, etc. when you can just open up
  Madhusudan> a native bash shell and use up/down keys to your heart's
  Madhusudan> content, does not make any sense at all. 

You can access a history with C-p and C-n. Why these are not bound to
up and down arrow by default, I really never understood. 

  Madhusudan> This is especially important when you are debugging some
  Madhusudan> code and need access to the shell, repeatedly. The
  Madhusudan> solution you list would be a horrendous waste of typing
  Madhusudan> and time in that case.

You're debugging bash code? I normally use mode-compile.el for
this. Basically, it runs bash with lots of debug output. 

I wonder whether GUD works on bash, that would be nice. 

  Madhusudan> Maybe it is time for a M-x bash RET.

It requires that you have bash. M-x shell also works with DOS, or many
other shells. 

Phil

Re: Running bash inside emacs

[Kevin Rodgers]

Phillip Lord wrote:
 > You can access a history with C-p and C-n.

I think you mean M-p and M-n, plus C-<up> and C-<down>.

 > Why these are not bound to up and down arrow by default, I really
 > never understood.

Because the arrow keys move up and down within the buffer, regardless of
mode.  This is a good thing.

 >   Madhusudan> Maybe it is time for a M-x bash RET.
 >
 > It requires that you have bash. M-x shell also works with DOS, or many
 > other shells.

I was going to refer you to http://www.emacswiki.org/elisp/defshell.el,
but it looks like it's suffering from a mild case of bit rot.

-- 
Kevin Rodgers

Re: Running bash inside emacs

[Adrian Aichner]

Madhusudan Singh <spammers-go-here@spam.invalid> writes:

> Hi
>
>  I was wondering if it is possible to run a bash shell inside an emacs
> buffer (where the up and down keys recall commands executed
> in .bash_history and do not move the cursor around -- the problem with the
> native shell available in emacs, tab results in command completion, etc.).

Why don't you do it the X?Emacs way and use
M-n runs the command comint-next-matching-input-from-input
M-p runs the command comint-previous-matching-input-from-input
for history.

To insert avoid
TAB runs the command comint-dynamic-complete
use C-q TAB instead

C-q runs the command quoted-insert

Hope this helps,

Adrian

>
> Thanks.

-- 
Adrian Aichner
 mailto:adrian@xemacs.org
 http://www.xemacs.org/