UNIX for Beginners Questions & Answers

44
39
359

44858475648
44645645645
3943534534

                                44 - 2 times
                                39 - 1 time

while read cc
do
   echo $cc $(grep -c "^$cc" fileb)
done <filea

 awk 'FNR==NR {a[$1];next} {for(i in a) if ($0 ~ ("^"i)) a[i]++}END {for (i in a) printf("%d - %d times\n", i, a[i])}' fileA fileB

while read cc
do
   c=$(grep -c "^$cc" fileb) &&
   echo "$cc - $c times"
done <filea

...
 END {for (i in a) if (a[i]) printf("%d - %d times\n", i, a[i])}
' fileA fileB

sed 's/^/^/' filea | grep  -of- fileb | sort | uniq -c
      1 39
      2 44