Prints the credentials for the web services
Examples
print_credentials()
#> Api_name Portal Username Password
#> [1,] "lpdaac" "earthdata" "" ""
#> [2,] "usgs" "earthdata" "" ""
#> [3,] "dataspace" "dataspace" "" ""
set_credentials("example", "example", "earthdata")
print_credentials()
#> Api_name Portal Username Password
#> [1,] "lpdaac" "earthdata" "example" "example"
#> [2,] "usgs" "earthdata" "example" "example"
#> [3,] "dataspace" "dataspace" "" ""