gambas-user

[Gambas-user] shell

[Mike <mik...@we...>]

Hi all

 

I am trying to run the terminal with input from the gambas shell command.
Looks like I have it wrong, any help please.

 

SHELL "/home/mike/Desktop/Terminal espeak Hello" 

 

Regards all

Mike

[Gambas-user] shell

[Mike C. <mik...@y7...>]

 
Hey boys, I am trying to emulate the terminal string sudo sh -c
'echo out /sys/class/gpio/gpio27/direction' (works OK in terminal, on
BBB wheezy arm lxde) I run this from gambas3.5.90 Exec [system.shell,
"sudo sh -c 'echo out /sys/class/gpio/gpio27/direction'"]
and get an error /bin/sh: 0: Can't open sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction' any help please. 

 I
have also tried shell "sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction'" this runs with out error and
but will not change data in the direction file. It stays at the old
value of "in". 

 If
I run it from a terminal the string works fine. 

 Thanks
in advance
Mike

Re: [Gambas-user] shell

[Kende K. <ne...@fr...>]

2013-12-02 12:17 keltezéssel, Mike Crean írta:
>   
> Hey boys, I am trying to emulate the terminal string sudo sh -c
> 'echo out /sys/class/gpio/gpio27/direction' (works OK in terminal, on
> BBB wheezy arm lxde) I run this from gambas3.5.90 Exec [system.shell,
> "sudo sh -c 'echo out /sys/class/gpio/gpio27/direction'"]
> and get an error /bin/sh: 0: Can't open sudo sh -c 'echo out
> /sys/class/gpio/gpio27/direction' any help please.

So the shell command is the following:

sudo sh -c "echo out >/sys/class/gpio/gpio27/direction"

(with '>') ?

Try this:

Exec ["sudo", "sh", "-c", "echo out >/sys/class/gpio/gpio27/direction"]

Or use Gambas executable with root permission:

File.Save("/sys/class/gpio/gpio27/direction", "out\n")


>   I
> have also tried shell "sudo sh -c 'echo out
> /sys/class/gpio/gpio27/direction'" this runs with out error and
> but will not change data in the direction file. It stays at the old
> value of "in".
>
>   If
> I run it from a terminal the string works fine.
>
>   Thanks
> in advance
> Mike

Kendek

Re: [Gambas-user] shell

[Tobias B. <ta...@gm...>]

On Mon, 02 Dec 2013, Mike Crean wrote:
>  
> Hey boys, I am trying to emulate the terminal string sudo sh -c
> 'echo out /sys/class/gpio/gpio27/direction' (works OK in terminal, on
> BBB wheezy arm lxde) I run this from gambas3.5.90 Exec [system.shell,
> "sudo sh -c 'echo out /sys/class/gpio/gpio27/direction'"]
> and get an error /bin/sh: 0: Can't open sudo sh -c 'echo out
> /sys/class/gpio/gpio27/direction' any help please. 
> 

If you write Exec [System.Shell, "sudo sh -c ..."], then the second string
is the first and only argument to System.Shell. At least on my system, the
default shell tries to execute that program.

However, "sudo sh -c ..." is normally not a program. "sudo" is a program,
"sh" is one and "-c" and "..." are arguments but the whole string is not a
program name. You have to put them all in separate entries in the Exec
array: Exec [System.Shell, "sudo", "sh", "-c", "..."].

>  I
> have also tried shell "sudo sh -c 'echo out
> /sys/class/gpio/gpio27/direction'" this runs with out error and
> but will not change data in the direction file. It stays at the old
> value of "in". 
> 
>  If
> I run it from a terminal the string works fine. 
> 
>  Thanks
> in advance
> Mike

Are you really sure that the *same* command works in a terminal? I mean:

$ sudo sh -c 'echo out /sys/class/gpio/gpio27/direction'

All the echo's I have seen so far will *not* write "out" to
/sys/class/gpio/gpio27/direction if called that way. They will just print
"out /sys/class/gpio/gpio27/direction" literally. You may need to redirect
"out" to the file like in

$ sudo sh -c 'echo out >/sys/class/gpio/gpio27/direction'

Regards,
Tobi

-- 
"There's an old saying: Don't change anything... ever!" -- Mr. Monk

Re: [Gambas-user] shell

[MinnesotaJon <nic...@ac...>]

Maybe I'm not understanding the problem, but "sudo" always wants a password,
right?  In which case you have to feed it a password with the Exec or Shell
command.  I'm not a shell script expert (just learning), but I assume that
the string would look like this:

Exec [system.shell, "sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction'<< EOF\nmypassword\nEOF"] 
where you have already dimensioned and set the value of "mypassword" in your
code.

If you have dimensioned a variable like "strShellResponseString", you will
be able to display a response from sudo in your program, if the password is
incorrect:
Exec [system.shell, "sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction'<< EOF\nmypassword\nEOF"] TO
strShellResponseString

note:  My additional code is a "here document" code block.  "<<" feeds a
command list to an interactive program or a command, like sudo.  "EOF" means
end-of-file, but it also terminates input from stdin.  The newline escape
code "\n" is needed before and after the password variable, to place the
password where sudo expects it, after a linefeed from stdin, followed by
another linefeed.  And then the second "EOF" terminates this input, which
allows sudo to evaluate the password and either execute the sh command, or
give an error message if the password is wrong.  No extra spaces in all of
this, or they'll be interpreted as part of the code!



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Re: [Gambas-user] shell

[Rolf-Werner E. <eil...@t-...>]

You could allow a certain user to execute a command via the sudo system. 
I've got this here, one of the teachers is able to switch the internet 
on and off for students by applying a script. Normally, only the admin 
is allowed to change the filter chain... A Gambas front-end picks out 
the persons in the current class and feeds the script with their 
terminal data.

Rolf


Am 02.12.2013 17:08, schrieb MinnesotaJon:
> Maybe I'm not understanding the problem, but "sudo" always wants a password,
> right?  In which case you have to feed it a password with the Exec or Shell
> command.  I'm not a shell script expert (just learning), but I assume that
> the string would look like this:
>
> Exec [system.shell, "sudo sh -c 'echo out
> /sys/class/gpio/gpio27/direction'<< EOF\nmypassword\nEOF"]
> where you have already dimensioned and set the value of "mypassword" in your
> code.
>
> If you have dimensioned a variable like "strShellResponseString", you will
> be able to display a response from sudo in your program, if the password is
> incorrect:
> Exec [system.shell, "sudo sh -c 'echo out
> /sys/class/gpio/gpio27/direction'<< EOF\nmypassword\nEOF"] TO
> strShellResponseString
>
> note:  My additional code is a "here document" code block.  "<<" feeds a
> command list to an interactive program or a command, like sudo.  "EOF" means
> end-of-file, but it also terminates input from stdin.  The newline escape
> code "\n" is needed before and after the password variable, to place the
> password where sudo expects it, after a linefeed from stdin, followed by
> another linefeed.  And then the second "EOF" terminates this input, which
> allows sudo to evaluate the password and either execute the sh command, or
> give an error message if the password is wrong.  No extra spaces in all of
> this, or they'll be interpreted as part of the code!
>
>
>
> --
> View this message in context: http://gambas.8142.n7.nabble.com/shell-tp44500p44508.html
> Sent from the gambas-user mailing list archive at Nabble.com.
>
> ------------------------------------------------------------------------------
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Re: [Gambas-user] shell

[Ivan K. <iva...@fr...>]

Hi
Try
Shell "echo 'mypassword' |sudo -S sh -c 'echo out
/sys/class/gpio/gpio27/direction"

Regards

-----Ursprüngliche Nachricht-----
Von: Mike Crean [mailto:mik...@y7...] 
Gesendet: Montag, 2. Dezember 2013 12:18
An: Mike
Betreff: [Gambas-user] shell

 
Hey boys, I am trying to emulate the terminal string sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction' (works OK in terminal, on BBB wheezy arm
lxde) I run this from gambas3.5.90 Exec [system.shell, "sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction'"]
and get an error /bin/sh: 0: Can't open sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction' any help please. 

 I
have also tried shell "sudo sh -c 'echo out
/sys/class/gpio/gpio27/direction'" this runs with out error and but will not
change data in the direction file. It stays at the old value of "in". 

 If
I run it from a terminal the string works fine. 

 Thanks
in advance
Mike
----------------------------------------------------------------------------
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organizations don't have a clear picture of how application performance
affects their revenue. With AppDynamics, you get 100% visibility into your
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Re: [Gambas-user] shell

[Jussi L. <jus...@gm...>]

> Try
> Shell "echo 'mypassword' |sudo -S sh -c 'echo out
> /sys/class/gpio/gpio27/direction"
>

Bad idea.
Firstly, it supports only one password, which is stored as plain text.
Secondly, if the password is variable it would need proper sanitation
before entering it to shell.


Jussi

[Gambas-user] shell

[Mike C. <mik...@y7...>]

Hey Ivan, thanks very much for that. I forgot all about the piping command.
 
Regards Mike

[Gambas-user] shell

[Mike C. <mik...@y7...>]

If I run make from the terminal in a named directory make works as expected.
Using Gambas 3.9.2 and run the command, shell "make" while in the named directory I get an error make: *** No targets specified and no makefile found. Stop The same error when I try to shell to a file containing #!/bin/sh and make.The file runs correctly when run from the named directory. The named directory permissions are set for anyone.This is on a Rpi3 running RaspbianAnyone have a fix for this please.
Regards Mike

Re: [Gambas-user] shell

[Charlie <ch...@co...>]

Can you post the 'Shell' code you are using.



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Re: [Gambas-user] shell

[Fabien B. <gam...@gm...>]

???

2017-04-25 10:52 GMT+02:00 Charlie <ch...@co...>:
> Can you post the 'Shell' code you are using.
>
>
>
> -----
> Check out www.gambas.one
> --
> View this message in context: http://gambas.8142.n7.nabble.com/shell-tp58793p58795.html
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> ------------------------------------------------------------------------------
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-- 
Fabien Bodard

Re: [Gambas-user] shell

[Mike C. <mik...@y7...>]

Thanks Fabien I have solved the problem.
Regards Mike
 

    On Tuesday, 25 April 2017, 22:58, Fabien Bodard <gam...@gm...> wrote:
 

 ???

2017-04-25 10:52 GMT+02:00 Charlie <ch...@co...>:
> Can you post the 'Shell' code you are using.
>
>
>
> -----
> Check out www.gambas.one
> --
> View this message in context: http://gambas.8142.n7.nabble.com/shell-tp58793p58795.html
> Sent from the gambas-user mailing list archive at Nabble.com.
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Gambas-user mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gambas-user



-- 
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Re: [Gambas-user] shell

[Szenográdi N. P. <sev...@gm...>]

Hi,

this is working fine:

PUBLIC SUB Form_Open()
SHELL "espeak Hello"
END


regards, Sevoir


2008. 09. 2, kedd keltezéssel 19.16-kor Mike ezt írta:
> Hi all
> 
>  
> 
> I am trying to run the terminal with input from the gambas shell command.
> Looks like I have it wrong, any help please.
> 
>  
> 
> SHELL "/home/mike/Desktop/Terminal espeak Hello" 
> 
>  
> 
> Regards all
> 
> Mike
> 
> -------------------------------------------------------------------------
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