[R] load() failed to load .Rdata file in AWS-Ububtu

[Eric Berger]

Hi Christofer,
The directory /srv/shiny-server would normally be owned by the root user.
Your options would seem to be to either (1) bring up the R session as root
(dangerous)
or (2) try copying the file to your local directory and read it from there
(if allowed).
e.g. from the Unix shell:
> cd ~   (i.e. cd to your home directory)
> cp /srv/shiny-server/Dat.Rdata .   (Note the '.' at the end. This may not
work - if not then you can try the following
> sudo cp /srv/shiny-server/Dat.Rdata . (if you have sudo privileges - only
do this if the former command did not work)
> chmod 777 Dat.Rdata  (a bit of overkill - again preface by sudo if it
does not work without it)

Then in your R session you can do the load from the file in this location.
R>  load("~/Dat.Rdata")

HTH,
Eric


On Sat, Oct 7, 2017 at 8:54 PM, Christofer Bogaso <
bogaso.christofer at gmail.com> wrote:

> Hi again,
>
> I hope this is the right place to post my question on running R within
> Ubuntu, however if not, any pointer on right distribution list will be
> helpful.
>
> I am currently using R in Ubuntu which is hosted in Amazon - AWS.
>
> I have a .Rdata file in AWS which I am trying to load in R. Used
> following code, however, fails to load showing some permission issue.
> However that same .Rdata file is getting loaded perfectly when I try
> in my regular iOS.
>
> Below is my code and corresponding result :
>
> ubuntu at ip-172-31-23-148:~$ R
>
>
> R version 3.4.2 (2017-09-28) -- "Short Summer"
>
> Copyright (C) 2017 The R Foundation for Statistical Computing
>
> Platform: x86_64-pc-linux-gnu (64-bit)
>
>
> R is free software and comes with ABSOLUTELY NO WARRANTY.
>
> You are welcome to redistribute it under certain conditions.
>
> Type 'license()' or 'licence()' for distribution details.
>
>
>   Natural language support but running in an English locale
>
>
> R is a collaborative project with many contributors.
>
> Type 'contributors()' for more information and
>
> 'citation()' on how to cite R or R packages in publications.
>
>
> Type 'demo()' for some demos, 'help()' for on-line help, or
>
> 'help.start()' for an HTML browser interface to help.
>
> Type 'q()' to quit R.
>
>
> During startup - Warning message:
>
> Setting LC_CTYPE failed, using "C"
>
> > file.exists('/srv/shiny-server/Dat.Rdata')
>
> [1] TRUE
>
> > load('/srv/shiny-server/Dat.Rdata')
>
> Error in readChar(con, 5L, useBytes = TRUE) : cannot open the connection
>
> In addition: Warning message:
>
> In readChar(con, 5L, useBytes = TRUE) :
>
>   cannot open compressed file '/srv/shiny-server/Dat.Rdata', probable
> reason 'Permission denied'
>
> > readRDS('/srv/shiny-server/Dat.Rdata')
>
> Error in gzfile(file, "rb") : cannot open the connection
>
> In addition: Warning message:
>
> In gzfile(file, "rb") :
>
>   cannot open compressed file '/srv/shiny-server/Dat.Rdata', probable
> reason 'Permission denied'
>
>
> Can someone help me to understand where it went wrong with Ubuntu? I
> also tried with changing the extension from .Rdata to .RData, however
> observing the same error.
>
> Any pointer will be highly appreciated.
>
> Thanks for your time.
>
> ______________________________________________
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