[R] PHP escapeshellcmd() equivalent

[Roebuck,Paul L]

On 8/24/12 9:59 PM, "Yihui Xie" <xie at yihui.name> wrote:

> On Fri, Aug 24, 2012 at 3:17 PM, Roebuck,Paul L <proebuck at mdanderson.org>
> wrote:
>> On 8/24/12 2:59 PM, "R. Michael Weylandt" <michael.weylandt at gmail.com>
>> wrote:
>> 
>>> On Fri, Aug 24, 2012 at 2:48 PM, Roebuck,Paul <proebuck at mdanderson.org>
>>> wrote:
>>>> [Redirected from R-Devel...]
>>>> 
>>>> Not that I recall running across such, but does R (or CRAN package)
>>>> provide something equivalent to PHP's escapeshellcmd() function
>>>> to escape shell job control, wildcards, etc?
>>> 
>>> I don't know PHP, but what does escapeshellcmd() provide over and
>>> above what system() / system2() do?
>>> 
>> 
>> As before, it escapes job control, etc from the command string.
>> Assuming such existed in R, it would be used something like this:
>> 
>> R> system(escapeshellcmd(sprintf("somecmd %s", untrustedInput1)))
>
> You probably mean shQuote().
> 

No, as that ONLY handles double/single quote agreement
(equivalent to PHP's escapeshellarg() function).