This is one of that tiny function that help you to save yourself a lot of time! I thank the list for the suggestion!

library(gdata)
?keep
data(women, cars)
keep(cars)
## To remove all objects except cars, run:
## keep(cars, sure=TRUE)


R package installation and administration

A short list of basic but useful commands for managing
the packages in R:

# install a package
install.packages("ROCR")
# visualize package version
package_version("pamr")
# update a package
update.packages("Cairo")
# remove a package
remove.packages("RGtk2")

ls() improved!

This marvelous little function shows all objects in the current workspace
by mode, class and 'size'! Thanks to Bendix Carstensen!

lls <- function (pos = 1, pat = "")

{

dimx <- function(dd) if (is.null(dim(dd)))

length(dd)

else dim(dd)

lll <- ls(pos = pos, pat = pat)

cat(formatC("mode", 1, 15), formatC("class", 1, 18),

formatC("name",1, max(nchar(lll)) + 1), "size\n-----------------------------------------------------------------\n")

if (length(lll) > 0)

{

for (i in 1:length(lll))

{

cat(formatC(eval(parse(t = paste("mode(", lll[i],

")"))), 1, 15), formatC(paste(eval(parse(t = paste("class(",

lll[i], ")"))), collapse = " "), 1, 18), formatC(lll[i],

1, max(nchar(lll)) + 1), " ", eval(parse(t = paste("dimx(", lll[i], ")"))), "\n")

}

}

}