Linux File system

Example / Exercise

1. Connect: ssh login.itd.umich.edu
2. Print host: hostname
3. Print working directory: pwd
4. Create a directory: mkdir 506
5. Move to that directory: cd 506
6. Create a basic README.md to document your work in this folder:
   • echo "## Stats 506" > README.md
   • Append a blank line echo " " >> README.md
7. Create additional directories:
   • mkdir ./hw; mkdir ./examples
   • mkdir ./data && mkdir ./data/csv
8. Create multiple directories using a loop

for d in R Stata SAS sh
do
  mkdir ./examples/$d
  echo $d
done

Note the use of ; to execute multiple commands on the same line. It isn’t needed here, but && is used to execute the second command only if the first completes successfully. You can, but are not required to, read more about exit status and exit codes here.