How to use a variable with setwd()?

Question

Example:

var<-"name"
setwd("/media/data/var")

gives an error 'cause directory "/media/data/var" does not exist, but "/media/data/name".

So, how to declare var as variable within a quoted string?

Answer 1

You have to use paste:

setwd(paste0("/media/data/",var))

Or you can use file.path:

setwd(file.path("/media/data",var))