Unix

2. Use vget to download the file found at the following address: http://users.csc.tntech. edu/"jgraves/grades.cov.gz. (a) State a command to extract the contents of the gzip file grades.csv.gz. (b) The grades. csv file is a (comma separated values) text file, and it can be viewed (1) using less. How many unique grade entries are in grades.csv? (c) State a command to print the number of A's, B's, C's, D's, and F's, based on the (1) grades found in the grades.cav file. (d) State a command to print all of the numeric grades corresponding to A's in decreas- () ing order; do not include the letter grade. 3. In order to use the killall command, you will first need to install the pssisc package. (1) What command did you use to install the pamisc package