At some point refer to this https://gist.github.com/LeCoupa/122b12050f5fb267e75f
apt-get install gnumeric ssconvert Book1.xlsx newfile.csv http://stackoverflow.com/questions/10557360/convert-xlsx-to-csv-in-linux-command-line
ssh-keygen -t rsa
readlink -f file.txt
copy terminal output to clipboard “ctrl + shit + C”
Please refer to this link for a in-depth discussion on how to install and handle R packages and library for linux.
into the R session -> install.packages('txtplot')