-e in echo means evaluate the following string. PHP double quotes evaluates
by default.
So for line, echo -e "\rMYCOMMAND\r" > /dev/ttyS1 you'd write
file_put_contents("/dev/ttyS1", "\rMYCOMMAND\r");
I am using file_put_contents as it opens the fie, write content and closes
it which is exactly what "echo" is doing in your command.
On Tue, Feb 2, 2016 at 10:04 PM Danny <mynixmail@xxxxxxxxx> wrote:
> Yes I have ... ;) ... The problem I am experiencing is that the "-e"
> following
> the echo command is also sent to /dev/ttyS1 ...
>
> On Feb 02 16, shiplu :
> > To: Danny <mynixmail@xxxxxxxxx>, php-general General List
> > <php-general@xxxxxxxxxxxxx>
> > Date: Tue, 02 Feb 2016 15:57:35 +0000
> > From: shiplu <shiplu.net@xxxxxxxxx>
> > Subject: Re: Escaping BASH quotes
> >
> > Did you try opening that device file directly with php's built-in fopen
> and
> > write those strings with fwrite?
> >
> > On Tue, 2 Feb 2016 9:09 pm Danny <mynixmail@xxxxxxxxx> wrote:
> >
> > Hi guys,
> >
> > I need to send a command to BASH with quotes ... I have tried
> escapeshelarg
> > ()
> > and escapeshellcmd ... but somewhere I still have a bug:
> >
> here are the BASH commands I need to escape:
> echo -e "\rMYCOMMAND\r" > /dev/ttyS1
> echo -e ":AB7ASD-02:Command Msg:VF3LPO" > /dev/ttyS1
> echo -e "\r\03\r" > /dev/ttyS1
> >
> > At the moment I am using exec() to send these lines ...
> >
> > Any pointers?
> >
> > Thank you
> >
> > Danny
> >
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