Using the fact that the shell construct ${#var} gives the number of characters stored in var, rewrite wc in the shell. Be sure to use integer arithmetic! (Notes: Change your IFS variable to just a newline character so that leading whitespace characters on input are preserved, and also use the -r option to the shell's read command so that terminating backslash characters on the input are ignored.)
What will be an ideal response?
# duplicate wc as a shell script
origIFS=$IFS
for filename in $@
do
lines=0
var=$(cat $filename)
chars=${#var}
set $(cat $filename)
words=$#
" IFS="
while read line
do
lines=$(( $lines + 1 ))
done < $filename
echo $filename - chars=$chars, words=$words and lines=$lines
IFS=$origIFS
done
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What will be an ideal response?
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