This script also covers following techniques:
=> Reading input text file line by line
=> Reading and processing words in input
=> Convert word to lowercase
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | #!/bin/bash # Write a shell script that counts English language articles (a, an, the) # in a given text file. # # -------------------------------------------------------------------- # This is a free shell script under GNU GPL version 2.0 or above # Copyright (C) 2005 nixCraft project. # Feedback/comment/suggestions : http://cyberciti.biz/fb/ # ------------------------------------------------------------------------- # This script is part of nixCraft shell script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # ------------------------------------------------------------------------- echo -n "Enter a file name : " read file a=0 the=0 an=0 # make sure file exist if [ ! -f $file ] then echo "$file not a file!" exit 1 fi # put while loop to read a $file while read line do #process each word for w in $line do # convert word to lowercase; so that we can count ThE, THE, the, THe etc all lword="$(echo $w | tr '[A-Z]' '[a-z]')" # is it 'a' article? [ $lword = "a" ] && (( a++ )) || : [ $lword = "the" ] && (( the++ )) || : [ $lword = "an" ] && (( an++ )) || : done done < $file # display stats echo "a article occured $a times" echo "the article occured $the times" echo "an article occured $an times" |