Shell Programming and Scripting

pattern=core
total=0

for f in *
  do
     [ ! -f $f ] && continue
     if grep $f $pattern > /dev/null
     then
        size=`cat $f|wc -c`
        total=èxpr $total + $size`
     fi
  done

echo Total size of $pattern is $total

total=èxpr $total + $size`

total=`expr $total + $size`

grep $pattern $f

     if expr "$f" : "$pattern" > /dev/null

     if [[ "$f" == "$pattern" ]]

typeset -i mSize
typeset -i mTotal=0
mPattern='core'
for mFile in `find . -type f -name "*${mPattern}*"`
do
  mSize=`ls -l $mFile | tr -s ' ' | cut -d' ' -f5`
  mTotal=${mTotal}+${mSize}
done
echo 'Total size of '$pattern' is '${mTotal}