UNIX for Dummies Questions & Answers

egrep "cat|dog|monkey|bananas|bike" logfile

cat=3,dog=17,monkey=1,bananas=102,bike=51

# deliberate UUOC
for foo in dog cat mouse carcass
do
  cnt=$(cat *.log |  grep -c -F "$foo" )
  printf " $s=%d " $foo $cnt
done

# cat logfile
cat dog dog cat monkey
banana bike
dog

# cat logfile | tr ' ' '\n' | sort | uniq -c
   1 banana
   1 bike
   2 cat
   3 dog
   1 monkey

awk -v sw="cat|dog|monkey|bananas|bike" '
BEGIN { c=split(sw,a,"[|]"); }
{ for (w in a) { if ($0 ~ a[w]) d[a[w]]++; } }
END { for (i in a) { o=o (a[i]"="d[a[i]]","); }
  sub(",$","",o); print o;
}' logfile

dog=2,monkey=1,bananas=,bike=1,cat=1