I am using shell commands to install some packages in R. I have an R file "installDependencies.R" for installing packages, this is the content of the file:
packages <- c("xts","stringr","log4r")
# Function to check whether package is installed
is.installed <- function(mypkg){
is.element(mypkg, installed.packages()[,1])
}
for(package in packages){
# check if package is installed
if (!is.installed(package)){
install.packages(package)
}
}
Next, I'm running this on the terminal. This is the shell script I created:
#!/bin/bash
Rscript installDependencies.R
I get the following error while running the file:
algotree@algotree-900X3C-900X4C-900X4D:~$ ./inst.sh
Installing package into ‘/usr/local/lib/R/site-library’
(as ‘lib’ is unspecified)
Error in contrib.url(repos, type) :
trying to use CRAN without setting a mirror
Calls: install.packages -> grep -> contrib.url
Execution halted
algotree@algotree-900X3C-900X4C-900X4D:~$