Sorts and counts all warnings from gcc compilation output

count_gcc_warnings.sh

#!/bin/bash

if [ "$#" != "1" ]
then
   echo wrong number of arguments
   echo Usage: $0 \<filename\>
   echo filename - file with build output
   exit 1
else
   cat $1 | grep "warning:" | sort | uniq -c | sort -nr | awk '{print $0}{total+=1}END{print "Total number of warnings:\n"total}'
fi