Part 3 Fill in the blanks. 1) ( The following shell script myUniq is used to create a frequency list of every word in a file. When running the shell script, the first argument should be the pathname of the file to be checked. Assume we have a file as below: This is a test Test test test There are multiple tests After running the shell script, a two-column list is displayed on the screen. The first column shows what words appear, the second column shows how often they appear, for example: $./myUniq.sh test test@3 tests@1 multiple@1 is@1 are@1 a@1 This@1 There@1 Test@1 The lines are sorted by the frequency. cat $1 | tr ' ' ' ' > temp # put all words to a new line echo -n > file2.txt # clear file2.txt for line in _______A._______ # trace each line from temp file do # check if the current line is visited grep -q _______B._______ file2.txt if [_______C._______] then count=`_______D.___________` #count the number of words echo $line"@"$count >> file2.txt # add word and frequency to file fi done sort _______E._______ file2.txt # sort the lines according to the frequency