You can try to add quotation marks and make sure your package could support on your current R version, for example:
install.packages("aod")
I successfully installed "aod" package on the R 3.3.1. If this is the packages you are trying to install the same package, it should work fine for your R version.
If you want to install some open source software for bioinformatics from Bioconductor, please follow the instruction here.
## try http:// if https:// URLs are not supported
source("https://bioconductor.org/biocLite.R")
# Install specific packages, e.g., “GenomicFeatures” and “AnnotationDbi”
biocLite(c("GenomicFeatures", "AnnotationDbi"))
install.packages("packagename") is just an example — you’re supposed to replace the packagename part with the name of the package you want to install. For instance, to install the package ggplot2 you would use:
install.packages("ggplot2")
Does that make more sense?
You are also running a rather old version of R (two years out of date). You will likely have an easier time installing packages if you update R to the latest version (3.5.1).
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