(This article was first published on

**Econometrics by Simulation**, and kindly contributed to R-bloggers)# There are several domain name servers that allow

# for bulk searching of domain names.

# http://www.godaddy.com/bulk-domain-search.aspx

# http://www.namestation.com/bulk-domain-search

# However, they do not provide any wildcard support

# and instead expect users to supply their own list.

# Which is not a problem if you are an R coder.

# This single command will copy to the clipboard a list

# of mysite1 mysite2 mysite3....mysite500. You can then

# paste it directly into the godaddy window.

writeClipboard(paste0("mysite", 1:500))

# Using the built in vector letters will produce:

# mysite-a mysite-b mysite-c....mysite-z

writeClipboard(paste0("mysite-", letters))

# I have also written a bulk search command but

# I am not sure that it is really any better than

# the above command since it is really not as powerful.

# However, it does demonstrate how one might

# generate a wildcard search algorithm.

bulk.search <- function(intext) {

# Add spaces before and after

intext <- paste0(" ", intext, " ")

card <- c("|", "?", "#") # Declare the wildcards

# Declare the wildcard values

cardvalues <- list(c(letters,0:9), letters, 0:9)

` # A vector for saving wildcard detections`

` ncards <- NULL `

for (i in 1:length(card)) ncards[i] <-

nchar(gsub(sprintf("[^%s]", card[i]),"",intext))

stopifnot(sum(ncards)<2)

# If a wildcard is selected expand the intext

if (sum(ncards)==1) {

intext <- unlist(strsplit(intext,

card[ncards==1], fixed = TRUE))

intext <- paste0(intext[1],

cardvalues[[(1:3)[ncards==1]]],intext[2])

}

intext <- gsub(" ", "", intext) # Remove the extra spaces

writeClipboard(intext)

cat(paste("Coppied to clipboard:\n",

paste(intext, "\n", collapse=" ")))

intext

}

bulk.search("mysite?")

bulk.search("mysite|")

bulk.search("mysite#")

To

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