how to find the R packages and versions code example

Example 1: which package version do i have r

# Replace "snow" below with the name of the package
> packageVersion("snow")

Example 2: how to find the R packages and versions

ip <- as.data.frame(installed.packages()[,c(1,3:4)])
rownames(ip) <- NULL
ip <- ip[is.na(ip$Priority),1:2,drop=FALSE]
print(ip, row.names=FALSE)