Colas,

Bash’s -c option expects commands in a string which follows. Therefore, this 
will work: I’m using /usr/bin/touch as an example, rather than your example of 
pico, which is an interactive text editor.

    NSTask * myTask = [[NSTask alloc]init];
    
    NSArray * arguments = @[@"-c", @"/usr/bin/touch 
/Users/colas/touchedFile.txt", @"-l"];
    
    [myTask setCurrentDirectoryPath:@"/"];
    [myTask setLaunchPath:@"/bin/bash"];
    [myTask setArguments:arguments];
    
    [myTask launch];

This will touch a file named “touchedFile.txt” at the root of your home 
directory.

—
Bryan


On Apr 14, 2014, at 10:08 AM, Colas B <colasj...@yahoo.fr> wrote:

> OK.
> 
> But without the simple quotes, it also fails.
> 
> With the quotes, the error is
> /bin/bash: pico /Users/colas/myfile.txt: No such file or directory
> Without the quotes, the error is
> Error opening terminal: unknown.
> 
> Thanks!
> Le Lundi 14 avril 2014 16h19, Jerry Krinock <je...@ieee.org> a écrit :
> 
> From documentation of -[NSTask setArguments:] :
> 
> "The strings in arguments do not undergo shell expansion, so you do not need 
> to do special quoting”
> 
> I don’t know what they mean by “special”, but anyhow, the ‘ ' you put around 
> your last argument will be passed to your tool and cause it to fail.
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