Programming

Problem :- Find duplicate files (especially .c and .cpp) from two project base directories with following requirement :- 
1.Should be extendable to search in multiple base project directories
2.Must use STL container 
3.Should be portable to be used on Linux and Windows   
4.In advance search it should also look for contents of the file.

DIR1=${1};
DIR2=${2};
TMP1=$(mktemp);
TMP2=$(mktemp);
trap "rm -f $TMP1 $TMP2" EXIT HUP INT QUIT TERM
  
for f1 in $( find $DIR1 -type f -name "*.[ch]" ); do
        shasum $f1 >> TMP1;
done
for f2 in $( find $DIR2 -type f -name "*.[ch]" ); do
        shasum $f2 >> TMP2;
done
 
cat TMP1 TMP2|cut -W -f1|sort|uniq -c|
 awk '{if($1>1)print $2;}'|
while read sha;
do
        grep $sha TMP1 TMP2 | cut -W -f2;
        echo;
done
 exit 0

echo;