System command fails in Shiny (similar topic as #11405)

shiny
5

I have a similar issue running on Mac :

library(shiny)

ui <- fluidPage(
  fileInput("CF", label = "CF"),
  fileInput("ED", label = "ED"),
  actionButton("Run", "Run")
)


server <- function(input, output, session) {
    cf_file <- reactive({ 
        cfFile <- input$CF
        return(cfFile$datapath)
    })

    ed_file <- reactive({ 
        edFile <- input$ED
        return(edFile$datapath)
    })

    table_content <- eventReactive(input$Run, {
        req(input$ED$datapath)
        req(input$CF$datapath)
        file_ed <- ed_file()
        file_cf <- cf_file()
       system(paste("/bin/qt con ed -i", file_cf, "-p", file_ed, ">", file_ed,".db" ))
    })
}
shinyApp(ui, server)

Error:


sh: /bin/qt con ed -i /var/folders/z0/kms9x7hd6hgdtbtk3kxnjcjxw2_l57/T//RtmpjqfSir/0a97a587dbd6a346e41946d1/0.cf -p /var/folders/z0/kms9x7hd6hgdtbtk3kxnjcjxw2_l57/T//RtmpjqfSir/0925189f052a3cdc2163d025/0.ed > /var/folders/z0/kms9x7hd6hgdtbtk3kxnjcjxw2_l57/T//RtmpjqfSir/0925189f052a3cdc2163d025/0.ed.db: No such file or directory
Warning in system2(paste("/bin/qt con ed -i",  :
  error in running command

When i run the command generated by the system command in normal shell (outside R) it works but fails within R.

/bin/qt con ed -i /var/folders/z0/kms9x7hd6hgdtbtk3kxnjcjxw2_l57/T//RtmpjqfSir/0a97a587dbd6a346e41946d1/0.cf -p /var/folders/z0/kms9x7hd6hgdtbtk3kxnjcjxw2_l57/T//RtmpjqfSir/0925189f052a3cdc2163d025/0.ed > /var/folders/z0/kms9x7hd6hgdtbtk3kxnjcjxw2_l57/T//RtmpjqfSir/0925189f052a3cdc2163d025/0.ed.db

The issue is same with system and system2. Could someone help.