Redirectin output of call-process to a file.

Redirectin output of call-process to a file.

[Olive]

I am executing the following command:

(call-process "/usr/bin/echo" nil (:file "/tmp/test.txt") nil "hello")

According tothe documentaion this should redirect the output of th eproces to the file "/tmp/test.txt" but I have this error:

Symbol's function definition is void: :file

What am I doingwrong here? I use emcs 24.3.1 on GNU/Linux.

liv

Re: Redirectin output of call-process to a file.

[Barry Margolin]

In article <20130522150337.2e98e8ba@pcolivier.chezmoi.net>,
 Olive <diolu.remove_this_part@bigfoot.com> wrote:

> I am executing the following command:
> 
> (call-process "/usr/bin/echo" nil (:file "/tmp/test.txt") nil "hello")
> 
> According tothe documentaion this should redirect the output of th eproces to 
> the file "/tmp/test.txt" but I have this error:
> 
> Symbol's function definition is void: :file
> 
> What am I doingwrong here? I use emcs 24.3.1 on GNU/Linux.

You need to quote the list, to prevent it from being evaluated as a 
function call:

(call-process "/usr/bin/echo" nil '(:file "/tmp/test.txt") nil "hello")

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***

Re: Redirectin output of call-process to a file.

[Olive]

Barry Margolin <barmar@alum.mit.edu> wrote:

> 
> You need to quote the list, to prevent it from being evaluated as a 
> function call:
> 
> (call-process "/usr/bin/echo" nil '(:file "/tmp/test.txt") nil "hello")
> 


Thanks! (and excuse me for the typos, I was typing too fast).

Olive