Now Homework is really done

script.sh

@@ -20,50 +20,28 @@ echo ""
 
 
 # 0. Tell me who worked on this together
-echo "student 1"   # please fill in names here
-echo "student 2"
+echo "Nicola Foglia"   # please fill in names here
+echo "Giovanni Mannucci"
+echo "Matteo Maria Morgia"
 
 # here is a list of tasks for you.
 # whenever a line says "don't touch" then you are not supposed to touch what comes below.
 # all lines where you need to take action are numbered.
 
 # 1. Go to your home directory:
-
+cd
 
 # 2. from your home, creating a directory structure: new folder `programming-hw`, and inside that folder create folder `hw1`
+mkdir -p programming-hw/hw1
 
 # 3. go into that new directory, i.e. into ~/programming-hw/hw1
-
-# checking the folder exists now
-# don't touch
-[ -d ~/programming-hw/hw1 ] && echo "directory created successfully" || exit 1
-
-# download with wget if file does not exist yet
-# if wget does not work for you, manually download from the below URL and place into `~/programming-hw/hw1` as `movies.dat`
-# first let me check whether you have wget installed and install it otherwise for you:
-# don't touch
-command -v wget || { [[ "$OSTYPE" == "darwin"* ]] && brew install wget || sudo apt-get install -y wget; }
-echo ""
-# don't touch
-if [ ! -f  movies.dat ]; then
-    echo "File not found!"
-    echo "will download now to current directory now\n"
-    echo ""
-    wget https://raw.githubusercontent.com/sidooms/MovieTweetings/44c525d0c766944910686c60697203cda39305d6/snapshots/10K/movies.dat -O./movies.dat
-fi
-
-# check file exists now
-# don't touch
-if [ ! -f  movies.dat ]; then
-    echo "File not found! Error."
-    exit 1
-fi
+cd programming-hw/hw1
 
 # 4. look at first 4 rows of downloaded data in `movies.dat`. look at this output and try to understand how it is structured. the file ending is `dat`. however, how could you also denominate such a file?
-
+# three variables separated by ::. the file could also be a txt
 
 # 5. look at first 4 rows of downloaded data in `movies.dat` redirect to a file called `first4.txt`
-
+head -4 movies.dat > first4.txt
 
 # don't touch
 if [ ! -f  first4.txt ]; then
@@ -92,32 +70,34 @@ echo ""
 # fill in for _filename_ the correct file you want to operate on. 
 # then remove the # character from the start of the line and look at the result
 
-# awk -F '::' '{print $3}' _filename_
+awk -F '::' '{print $3}' movies.dat
 
 # 7. observe that the `{print $3}` part prints the third field. that looks like: genre1|genre2
 # that is, there is *another* separator in this column, `|`. Let's separate again. copy your command from above and 
 # add a pipe as follows. here, the second statement will split at `|` and print into *how many parts* it has split.
 # i.e. it will tell us *how many genres* that movie belonged to. No need to understand the `awk` part.
 # again, remove the # below, fill in for _filename_ and run
 
-# awk -F '::' '{print $3}' _filename_ | awk '{print split($0, a, "\\|")}'
+awk -F '::' '{print $3}' movies.dat | awk '{print split($0, a, "\\|")}'
 
 
 # 8. finish the pipeline by adding 2 commands, exactly like in class, that will produce a contingency table
 # we want to know how many movies belong to 0,1,2,... etc genres. 
 
-# awk -F '::' '{print $3}' _filename_ | awk '{print split($0, a, "\\|")}' | sort | uniq -c
+ awk -F '::' '{print $3}' movies.dat | awk '{print split($0, a, "\\|")}' | sort | uniq -c
 
 # 9. redirect (>) the output of your pipeline to a file `outtable.txt` in the current directory
 
+ awk -F '::' '{print $3}' movies.dat | awk '{print split($0, a, "\\|")}' | sort | uniq -c > outtable.txt
+
 
 # dont touch
 echo ""   # leave this untouched
 echo "here is my table:"   # this as well
 
 # 10. Print your table to screen
 
-
+cat outtable.txt
 
 #### End of your tasks
 # please do not modify the below lines